Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Boyko, I.; Briere, R. A.; Cai, H.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chai, J.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, X. R.; Chen, Y. B.; Chu, X. K.; Cibinetto, G.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dorjkhaidav, O.; Dou, Z. L.; Du, S. X.; Duan, P. F.; Fang, J.; Fang, S. S.; Fang, X.; Fang, Y.; Farinelli, R.; Fava, L.; Fegan, S.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fioravanti, E.; Fritsch, M.; Fu, C. D.; Gao, Q.; Gao, X. L.; Gao, Y.; Gao, Y. G.; Gao, Z.; Garzia, I.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, S.; Gu, Y. T.; Guo, A. Q.; Guo, L. B.; Guo, R. P.; Guo, Y. P.; Haddadi, Z.; Hafner, A.; Han, S.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, X. Q.; Heinsius, F. H.; Held, T.; Heng, Y. K.; Holtmann, T.; Hou, Z. L.; Hu, C.; Hu, H. M.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, J. S.; Huang, X. T.; Huang, X. Z.; Huang, Z. L.; Hussain, T.; Ikegami Andersson, W.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Johansson, T.; Julin, A.; Kalantar-Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Khan, T.; Kiese, P.; Kliemt, R.; Kloss, B.; Koch, L.; Kolcu, O. B.; Kopf, B.; Kornicer, M.; Kuemmel, M.; Kuhlmann, M.; Kupsc, A.; Kühn, W.; Lange, J. S.; Lara, M.; Larin, P.; Lavezzi, L.; Leithoff, H.; Leng, C.; Li, C.; Li, Cheng; Li, D. M.; Li, F.; Li, F. Y.; Li, G.; Li, H. B.; Li, H. J.; Li, J. C.; Li, Jin; Li, K.; Li, K.; Li, Lei; Li, P. L.; Li, P. R.; Li, Q. Y.; Li, T.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Lin, D. X.; Liu, B.; Liu, B. J.; Liu, C. X.; Liu, D.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. H.; Liu, H. H.; Liu, H. M.; Liu, J. B.; Liu, J. P.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, Ke; Liu, L. D.; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Y. Y.; Liu, Z. A.; Liu, Zhiqing; Long, Y. F.; Lou, X. C.; Lu, H. J.; Lu, J. G.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lyu, X. R.; Ma, F. C.; Ma, H. L.; Ma, L. L.; Ma, M. M.; Ma, Q. M.; Ma, T.; Ma, X. N.; Ma, X. Y.; Ma, Y. M.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Messchendorp, J. G.; Mezzadri, G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Morales Morales, C.; Morello, G.; Muchnoi, N. Yu.; Muramatsu, H.; Musiol, P.; Mustafa, A.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Niu, X. Y.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, Y.; Patteri, P.; Pelizaeus, M.; Pellegrino, J.; Peng, H. P.; Peters, K.; Pettersson, J.; Ping, J. L.; Ping, R. G.; Poling, R.; Prasad, V.; Qi, H. R.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, J. J.; Qin, N.; Qin, X. S.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Redmer, C. F.; Richter, M.; Ripka, M.; Rong, G.; Rosner, Ch.; Ruan, X. D.; Sarantsev, A.; Savrié, M.; Schnier, C.; Schoenning, K.; Shan, W.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Sheng, H. Y.; Song, J. J.; Song, X. Y.; Sosio, S.; Sowa, C.; Spataro, S.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, X. H.; Sun, Y. J.; Sun, Y. K.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, G. Y.; Tang, X.; Tapan, I.; Tiemens, M.; Tsednee, B. T.; Uman, I.; Varner, G. S.; Wang, B.; Wang, B. L.; Wang, D.; Wang, D. Y.; Wang, Dan; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, W. P.; Wang, X. F.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. H.; Wang, Z. Y.; Wang, Z. Y.; Weber, T.; Wei, D. H.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wu, L. J.; Wu, Z.; Xia, L.; Xia, Y.; Xiao, D.; Xiao, H.; Xiao, Y. J.; Xiao, Z. J.; Xie, Y. G.; Xie, Y. H.; Xiong, X. A.; Xiu, Q. L.; Xu, G. F.; Xu, J. J.; Xu, L.; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, Y. H.; Yang, Y. X.; Ye, M.; Ye, M. H.; Yin, J. H.; You, Z. Y.; Yu, B. X.; Yu, C. X.; Yu, J. S.; Yuan, C. Z.; Yuan, Y.; Yuncu, A.; Zafar, A. A.; Zeng, Y.; Zeng, Z.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, K.; Zhang, L.; Zhang, S. Q.; Zhang, X. Y.; Zhang, Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yu; Zhang, Z. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, J. W.; Zhao, J. Y.; Zhao, J. Z.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, W. J.; Zheng, Y. H.; Zhong, B.; Zhou, L.; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhou, X. Y.; Zhou, Y. X.; Zhu, K.; Zhu, K. J.; Zhu, S.; Zhu, S. H.; Zhu, X. L.; Zhu, Y. C.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zotti, L.; Zou, B. S.; Zou, J. H.

doi:10.1103/PhysRevD.97.052001

Title: Measurement of $e^{+} e^{-} \to π^{0} π^{0} ψ (3686)$ at $\sqrt{s}$ from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure

Abstract

Using e⁺e^- collision data collected with the BESIII detector at the BEPCII collider corresponding to an integrated luminosity of 5.2 fb^-1 at center-of-mass energies (ps) from 4.009 to 4.600 GeV, the process e⁺e^- →π⁰π⁰ψ (3686) is studied for the first time. The corresponding Born cross sections are measured and found to be half of those of the reaction e⁺e^- π⁺π^-ψ (3686). This is consistent with the expectation from isospin symmetry. Furthermore, the Dalitz plots for π⁰π⁰ψ (3686) are accordant with those of π⁺π^-ψ (3686) at all energy points, and a neutral analogue to the structure in π^±ψ (3686) around 4040 MeV/c² first observed at $$\sqrt{s}$$ = 4.416 GeV is observed in the isospin neutral mode at the same energy.

Authors:: Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Boyko, I. more »« less

Publication Date:: Wed Mar 07 00:00:00 EST 2018

Research Org.:: George Washington Univ., Washington, DC (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Org.:: BESIII Collaboration

OSTI Identifier:: 1424534

Alternate Identifier(s):: OSTI ID: 1440849

Grant/Contract Number:: FG02-05ER41374; SC-0010118; SC-0010504; SC-0012069; SC0016583

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 5; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BESIII

Citation Formats


                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dorjkhaidav, O., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., He, X. Q., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, C., Hu, H. M., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Ikegami Andersson, W., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Kiese, P., Kliemt, R., Kloss, B., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, Jin, Li, K., Li, K., Li, Lei, Li, P. L., Li, P. R., Li, Q. Y., Li, T., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. H., Liu, H. H., Liu, H. M., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, Ke, Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Y. Y., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, T., Ma, X. N., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Marcello, S., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Morello, G., Muchnoi, N. Yu., Muramatsu, H., Musiol, P., Mustafa, A., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, J. J., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rong, G., Rosner, Ch., Ruan, X. D., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, J. J., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, G. Y., Tang, X., Tapan, I., Tiemens, M., Tsednee, B. T., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, Dan, Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Wang, Z. Y., Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, D., Xiao, H., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, Q. N., Xu, X. P., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. H., Yang, Y. X., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., Zou, J. H., and BESIII Collaboration. Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevD.97.052001.

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                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dorjkhaidav, O., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., He, X. Q., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, C., Hu, H. M., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Ikegami Andersson, W., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Kiese, P., Kliemt, R., Kloss, B., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, Jin, Li, K., Li, K., Li, Lei, Li, P. L., Li, P. R., Li, Q. Y., Li, T., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. H., Liu, H. H., Liu, H. M., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, Ke, Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Y. Y., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, T., Ma, X. N., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Marcello, S., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Morello, G., Muchnoi, N. Yu., Muramatsu, H., Musiol, P., Mustafa, A., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, J. J., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rong, G., Rosner, Ch., Ruan, X. D., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, J. J., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, G. Y., Tang, X., Tapan, I., Tiemens, M., Tsednee, B. T., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, Dan, Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Wang, Z. Y., Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, D., Xiao, H., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, Q. N., Xu, X. P., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. H., Yang, Y. X., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., Zou, J. H., & BESIII Collaboration. Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure.  United States.  https://doi.org/10.1103/PhysRevD.97.052001

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                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dorjkhaidav, O., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., He, X. Q., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, C., Hu, H. M., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Ikegami Andersson, W., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Kiese, P., Kliemt, R., Kloss, B., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, Jin, Li, K., Li, K., Li, Lei, Li, P. L., Li, P. R., Li, Q. Y., Li, T., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. H., Liu, H. H., Liu, H. M., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, Ke, Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Y. Y., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, T., Ma, X. N., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Marcello, S., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Morello, G., Muchnoi, N. Yu., Muramatsu, H., Musiol, P., Mustafa, A., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, J. J., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rong, G., Rosner, Ch., Ruan, X. D., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, J. J., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, G. Y., Tang, X., Tapan, I., Tiemens, M., Tsednee, B. T., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, Dan, Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Wang, Z. Y., Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, D., Xiao, H., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, Q. N., Xu, X. P., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. H., Yang, Y. X., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., Zou, J. H., and BESIII Collaboration. Wed .  
"Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure".  United States.  https://doi.org/10.1103/PhysRevD.97.052001.

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@article{osti_1424534,

  title        = {Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure},

  author       = {Ablikim, M. and Achasov, M. N. and Ahmed, S. and Albrecht, M. and Amoroso, A. and An, F. F. and An, Q. and Bai, J. Z. and Bakina, O. and Baldini Ferroli, R. and Ban, Y. and Bennett, D. W. and Bennett, J. V. and Berger, N. and Bertani, M. and Bettoni, D. and Bian, J. M. and Bianchi, F. and Boger, E. and Boyko, I. and Briere, R. A. and Cai, H. and Cai, X. and Cakir, O. and Calcaterra, A. and Cao, G. F. and Cetin, S. A. and Chai, J. and Chang, J. F. and Chelkov, G. and Chen, G. and Chen, H. S. and Chen, J. C. and Chen, M. L. and Chen, S. J. and Chen, X. R. and Chen, Y. B. and Chu, X. K. and Cibinetto, G. and Dai, H. L. and Dai, J. P. and Dbeyssi, A. and Dedovich, D. and Deng, Z. Y. and Denig, A. and Denysenko, I. and Destefanis, M. and De Mori, F. and Ding, Y. and Dong, C. and Dong, J. and Dong, L. Y. and Dong, M. Y. and Dorjkhaidav, O. and Dou, Z. L. and Du, S. X. and Duan, P. F. and Fang, J. and Fang, S. S. and Fang, X. and Fang, Y. and Farinelli, R. and Fava, L. and Fegan, S. and Feldbauer, F. and Felici, G. and Feng, C. Q. and Fioravanti, E. and Fritsch, M. and Fu, C. D. and Gao, Q. and Gao, X. L. and Gao, Y. and Gao, Y. G. and Gao, Z. and Garzia, I. and Goetzen, K. and Gong, L. and Gong, W. X. and Gradl, W. and Greco, M. and Gu, M. H. and Gu, S. and Gu, Y. T. and Guo, A. Q. and Guo, L. B. and Guo, R. P. and Guo, Y. P. and Haddadi, Z. and Hafner, A. and Han, S. and Hao, X. Q. and Harris, F. A. and He, K. L. and He, X. Q. and Heinsius, F. H. and Held, T. and Heng, Y. K. and Holtmann, T. and Hou, Z. L. and Hu, C. and Hu, H. M. and Hu, T. and Hu, Y. and Huang, G. S. and Huang, J. S. and Huang, X. T. and Huang, X. Z. and Huang, Z. L. and Hussain, T. and Ikegami Andersson, W. and Ji, Q. and Ji, Q. P. and Ji, X. B. and Ji, X. L. and Jiang, X. S. and Jiang, X. Y. and Jiao, J. B. and Jiao, Z. and Jin, D. P. and Jin, S. and Johansson, T. and Julin, A. and Kalantar-Nayestanaki, N. and Kang, X. L. and Kang, X. S. and Kavatsyuk, M. and Ke, B. C. and Khan, T. and Kiese, P. and Kliemt, R. and Kloss, B. and Koch, L. and Kolcu, O. B. and Kopf, B. and Kornicer, M. and Kuemmel, M. and Kuhlmann, M. and Kupsc, A. and Kühn, W. and Lange, J. S. and Lara, M. and Larin, P. and Lavezzi, L. and Leithoff, H. and Leng, C. and Li, C. and Li, Cheng and Li, D. M. and Li, F. and Li, F. Y. and Li, G. and Li, H. B. and Li, H. J. and Li, J. C. and Li, Jin and Li, K. and Li, K. and Li, Lei and Li, P. L. and Li, P. R. and Li, Q. Y. and Li, T. and Li, W. D. and Li, W. G. and Li, X. L. and Li, X. N. and Li, X. Q. and Li, Z. B. and Liang, H. and Liang, Y. F. and Liang, Y. T. and Liao, G. R. and Lin, D. X. and Liu, B. and Liu, B. J. and Liu, C. X. and Liu, D. and Liu, F. H. and Liu, Fang and Liu, Feng and Liu, H. B. and Liu, H. H. and Liu, H. H. and Liu, H. M. and Liu, J. B. and Liu, J. P. and Liu, J. Y. and Liu, K. and Liu, K. Y. and Liu, Ke and Liu, L. D. and Liu, P. L. and Liu, Q. and Liu, S. B. and Liu, X. and Liu, Y. B. and Liu, Y. Y. and Liu, Z. A. and Liu, Zhiqing and Long, Y. F. and Lou, X. C. and Lu, H. J. and Lu, J. G. and Lu, Y. and Lu, Y. P. and Luo, C. L. and Luo, M. X. and Luo, T. and Luo, X. L. and Lyu, X. R. and Ma, F. C. and Ma, H. L. and Ma, L. L. and Ma, M. M. and Ma, Q. M. and Ma, T. and Ma, X. N. and Ma, X. Y. and Ma, Y. M. and Maas, F. E. and Maggiora, M. and Malik, Q. A. and Mao, Y. J. and Mao, Z. P. and Marcello, S. and Messchendorp, J. G. and Mezzadri, G. and Min, J. and Min, T. J. and Mitchell, R. E. and Mo, X. H. and Mo, Y. J. and Morales Morales, C. and Morello, G. and Muchnoi, N. Yu. and Muramatsu, H. and Musiol, P. and Mustafa, A. and Nefedov, Y. and Nerling, F. and Nikolaev, I. B. and Ning, Z. and Nisar, S. and Niu, S. L. and Niu, X. Y. and Olsen, S. L. and Ouyang, Q. and Pacetti, S. and Pan, Y. and Patteri, P. and Pelizaeus, M. and Pellegrino, J. and Peng, H. P. and Peters, K. and Pettersson, J. and Ping, J. L. and Ping, R. G. and Poling, R. and Prasad, V. and Qi, H. R. and Qi, M. and Qian, S. and Qiao, C. F. and Qin, J. J. and Qin, N. and Qin, X. S. and Qin, Z. H. and Qiu, J. F. and Rashid, K. H. and Redmer, C. F. and Richter, M. and Ripka, M. and Rong, G. and Rosner, Ch. and Ruan, X. D. and Sarantsev, A. and Savrié, M. and Schnier, C. and Schoenning, K. and Shan, W. and Shao, M. and Shen, C. P. and Shen, P. X. and Shen, X. Y. and Sheng, H. Y. and Song, J. J. and Song, X. Y. and Sosio, S. and Sowa, C. and Spataro, S. and Sun, G. X. and Sun, J. F. and Sun, S. S. and Sun, X. H. and Sun, Y. J. and Sun, Y. K. and Sun, Y. Z. and Sun, Z. J. and Sun, Z. T. and Tang, C. J. and Tang, G. Y. and Tang, X. and Tapan, I. and Tiemens, M. and Tsednee, B. T. and Uman, I. and Varner, G. S. and Wang, B. and Wang, B. L. and Wang, D. and Wang, D. Y. and Wang, Dan and Wang, K. and Wang, L. L. and Wang, L. S. and Wang, M. and Wang, P. and Wang, P. L. and Wang, W. P. and Wang, X. F. and Wang, Y. D. and Wang, Y. F. and Wang, Y. Q. and Wang, Z. and Wang, Z. G. and Wang, Z. H. and Wang, Z. Y. and Wang, Z. Y. and Weber, T. and Wei, D. H. and Weidenkaff, P. and Wen, S. P. and Wiedner, U. and Wolke, M. and Wu, L. H. and Wu, L. J. and Wu, Z. and Xia, L. and Xia, Y. and Xiao, D. and Xiao, H. and Xiao, Y. J. and Xiao, Z. J. and Xie, Y. G. and Xie, Y. H. and Xiong, X. A. and Xiu, Q. L. and Xu, G. F. and Xu, J. J. and Xu, L. and Xu, Q. J. and Xu, Q. N. and Xu, X. P. and Yan, L. and Yan, W. B. and Yan, W. C. and Yan, Y. H. and Yang, H. J. and Yang, H. X. and Yang, L. and Yang, Y. H. and Yang, Y. X. and Ye, M. and Ye, M. H. and Yin, J. H. and You, Z. Y. and Yu, B. X. and Yu, C. X. and Yu, J. S. and Yuan, C. Z. and Yuan, Y. and Yuncu, A. and Zafar, A. A. and Zeng, Y. and Zeng, Z. and Zhang, B. X. and Zhang, B. Y. and Zhang, C. C. and Zhang, D. H. and Zhang, H. H. and Zhang, H. Y. and Zhang, J. and Zhang, J. L. and Zhang, J. Q. and Zhang, J. W. and Zhang, J. Y. and Zhang, J. Z. and Zhang, K. and Zhang, L. and Zhang, S. Q. and Zhang, X. Y. and Zhang, Y. and Zhang, Y. and Zhang, Y. H. and Zhang, Y. T. and Zhang, Yu and Zhang, Z. H. and Zhang, Z. P. and Zhang, Z. Y. and Zhao, G. and Zhao, J. W. and Zhao, J. Y. and Zhao, J. Z. and Zhao, Lei and Zhao, Ling and Zhao, M. G. and Zhao, Q. and Zhao, S. J. and Zhao, T. C. and Zhao, Y. B. and Zhao, Z. G. and Zhemchugov, A. and Zheng, B. and Zheng, J. P. and Zheng, W. J. and Zheng, Y. H. and Zhong, B. and Zhou, L. and Zhou, X. and Zhou, X. K. and Zhou, X. R. and Zhou, X. Y. and Zhou, Y. X. and Zhu, K. and Zhu, K. J. and Zhu, S. and Zhu, S. H. and Zhu, X. L. and Zhu, Y. C. and Zhu, Y. S. and Zhu, Z. A. and Zhuang, J. and Zotti, L. and Zou, B. S. and Zou, J. H. and BESIII Collaboration},

  abstractNote = {Using e+e- collision data collected with the BESIII detector at the BEPCII collider corresponding to an integrated luminosity of 5.2 fb-1 at center-of-mass energies (ps) from 4.009 to 4.600 GeV, the process e+e- →π0π0ψ (3686) is studied for the first time. The corresponding Born cross sections are measured and found to be half of those of the reaction e+e- π+π-ψ (3686). This is consistent with the expectation from isospin symmetry. Furthermore, the Dalitz plots for π0π0ψ (3686) are accordant with those of π+π-ψ (3686) at all energy points, and a neutral analogue to the structure in π±ψ (3686) around 4040 MeV/c2 first observed at $\sqrt{s}$ = 4.416 GeV is observed in the isospin neutral mode at the same energy.},

  doi          = {10.1103/PhysRevD.97.052001},

  journal      = {Physical Review D},

  number       = 5,

  volume       = 97,

  place        = {United States},

  year         = {Wed Mar 07 00:00:00 EST 2018},

  month        = {Wed Mar 07 00:00:00 EST 2018}

}

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The <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> as an <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>ω</mml:mi><mml:msub><mml:mi>χ</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:math> molecular state
journal, March 2006

Yuan, C. Z.; Wang, P.; Mo, X. H.
Physics Letters B, Vol. 634, Issue 4
DOI: 10.1016/j.physletb.2006.01.031

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
journal, February 2010

Actis, S.; Arbuzov, A.; Balossini, G.
The European Physical Journal C, Vol. 66, Issue 3-4
DOI: 10.1140/epjc/s10052-010-1251-4

$Y (4260)$ on the lattice
journal, May 2006

Chiu, Ting-Wai; Hsieh, Tung-Han
Physical Review D, Vol. 73, Issue 9
DOI: 10.1103/PhysRevD.73.094510

Study of the reaction $e^{+} e^{-} \to ψ (2 S) π^{+} π^{-}$ via initial-state radiation at BaBar
journal, June 2014

Lees, J. P.; Poireau, V.; Tisserand, V.
Physical Review D, Vol. 89, Issue 11
DOI: 10.1103/PhysRevD.89.111103

Confirmation of the $Y (4260)$ resonance production in initial state radiation
journal, November 2006

He, Q.; Insler, J.; Muramatsu, H.
Physical Review D, Vol. 74, Issue 9
DOI: 10.1103/PhysRevD.74.091104

One explanation for the exotic state <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>
journal, August 2006

Qiao, Cong-Feng
Physics Letters B, Vol. 639, Issue 3-4
DOI: 10.1016/j.physletb.2006.06.038

Observation of a Neutral Structure near the $D {\bar{D}}^{}$ Mass Threshold in $e^{+} e^{-} \to (D {\bar{D}}^{})^{0} π^{0}$ at $\sqrt{s} = 4.226$ and 4.257 GeV
journal, November 2015

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Physical Review Letters, Vol. 115, Issue 22
DOI: 10.1103/PhysRevLett.115.222002

Review of Particle Physics
journal, October 2016

Olive, K. A.
Chinese Physics C, Vol. 40, Issue 10
DOI: 10.1088/1674-1137/40/10/100001

Search for hadronic transition $χ_{c J} \to η_{c} π^{+} π^{-}$ and observation of $χ_{c J} \to K \bar{K} π π π$
journal, January 2013

Ablikim, M.; Achasov, M. N.; Ambrose, D. J.
Physical Review D, Vol. 87, Issue 1
DOI: 10.1103/PhysRevD.87.012002

Observation of a Charged ${(D {\bar{D}}^{})}^{\pm}$ Mass Peak in $e^{+} e^{-} \to π D {\bar{D}}^{}$ at $\sqrt{s} = 4.26 GeV$
journal, January 2014

Ablikim, M.; Achasov, M. N.; Albayrak, O.
Physical Review Letters, Vol. 112, Issue 2
DOI: 10.1103/PhysRevLett.112.022001

Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
journal, September 2015

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Chinese Physics C, Vol. 39, Issue 9
DOI: 10.1088/1674-1137/39/9/093001

The EvtGen particle decay simulation package
journal, April 2001

Lange, David J.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 1-2
DOI: 10.1016/S0168-9002(01)00089-4

Measurement of $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via initial state radiation at Belle
journal, June 2015

Wang, X. L.; Yuan, C. Z.; Shen, C. P.
Physical Review D, Vol. 91, Issue 11
DOI: 10.1103/PhysRevD.91.112007

Observation of a Charged Charmoniumlike Structure $Z_{c} (4020)$ and Search for the $Z_{c} (3900)$ in $e^{+} e^{-} \to π^{+} π^{-} h_{c}$
journal, December 2013

Ablikim, M.; Achasov, M. N.; Albayrak, O.
Physical Review Letters, Vol. 111, Issue 24
DOI: 10.1103/PhysRevLett.111.242001

Gauge-Invariant Lagrangians for free and Interacting Higher spin Fields: a Review of the brst Formulation
journal, January 2009

Fotopoulos, Angelos; Tsulaia, Mirian
International Journal of Modern Physics A, Vol. 24, Issue 01
DOI: 10.1142/S0217751X09043134

Precise Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV
journal, March 2017

Ablikim, M.; Achasov, M. N.; Ahmed, S.
Physical Review Letters, Vol. 118, Issue 9
DOI: 10.1103/PhysRevLett.118.092001

Observation of a Neutral Charmoniumlike State $Z_{c} (4025)^{0}$ in $e^{+} e^{-} \to (D^{} {\bar{D}}^{})^{0} π^{0}$
journal, October 2015

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Physical Review Letters, Vol. 115, Issue 18
DOI: 10.1103/PhysRevLett.115.182002

The precision Monte Carlo event generator for two-fermion final states in collisions
journal, August 2000

Jadach, S.; Ward, B. F. L.; Wa̧s, Z.
Computer Physics Communications, Vol. 130, Issue 3
DOI: 10.1016/S0010-4655(00)00048-5

Study of $χ_{c J}$ radiative decays into a vector meson
journal, June 2011

Ablikim, M.; Achasov, M. N.; Alberto, D.
Physical Review D, Vol. 83, Issue 11
DOI: 10.1103/PhysRevD.83.112005

The possible interpretations of Y(4260)
journal, October 2005

Zhu, Shi-Lin
Physics Letters B, Vol. 625, Issue 3-4
DOI: 10.1016/j.physletb.2005.08.068

Hadronic decays of excited heavy quarkonia
journal, February 1997

Mannel, Thomas; Urech, Res
Zeitschrift f�r Physik C Particles and Fields, Vol. 73, Issue 3
DOI: 10.1007/s002880050344

Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ Cross Section Via Initial-State Radiation at Belle
journal, November 2007

Yuan, C. Z.; Shen, C. P.; Wang, P.
Physical Review Letters, Vol. 99, Issue 18
DOI: 10.1103/PhysRevLett.99.182004

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around $4.26 GeV / c^{2}$
journal, September 2005

Aubert, B.; Barate, R.; Boutigny, D.
Physical Review Letters, Vol. 95, Issue 14
DOI: 10.1103/PhysRevLett.95.142001

Observation of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via Initial-State Radiation at Belle
journal, October 2007

Wang, X. L.; Yuan, C. Z.; Shen, C. P.
Physical Review Letters, Vol. 99, Issue 14
DOI: 10.1103/PhysRevLett.99.142002

Gluonic charmonium resonances at BaBar and Belle?
journal, November 2005

Close, Frank E.; Page, Philip R.
Physics Letters B, Vol. 628, Issue 3-4
DOI: 10.1016/j.physletb.2005.09.016

Heavy quarkonium: progress, puzzles, and opportunities
journal, February 2011

Brambilla, N.; Eidelman, S.; Heltsley, B. K.
The European Physical Journal C, Vol. 71, Issue 2
DOI: 10.1140/epjc/s10052-010-1534-9

Masses of heavy tetraquarks in the relativistic quark model
journal, March 2006

Ebert, D.; Faustov, R. N.; Galkin, V. O.
Physics Letters B, Vol. 634, Issue 2-3
DOI: 10.1016/j.physletb.2006.01.026

Observation of Two Charged Bottomoniumlike Resonances in $Υ (5 S)$ Decays
journal, March 2012

Bondar, A.; Garmash, A.; Mizuk, R.
Physical Review Letters, Vol. 108, Issue 12
DOI: 10.1103/PhysRevLett.108.122001

Measurement of $e^{+} e^{-} \to π^{+} π^{-} ψ (3686)$ from 4.008 to 4.600 GeV and observation of a charged structure in the $π^{\pm} ψ (3686)$ mass spectrum
journal, August 2017

Ablikim, M.; Achasov, M. N.; Ahmed, S.
Physical Review D, Vol. 96, Issue 3
DOI: 10.1103/PhysRevD.96.032004

Event generators at BESIII
journal, August 2008

Rong-Gang, Ping
Chinese Physics C, Vol. 32, Issue 8
DOI: 10.1088/1674-1137/32/8/001

Observation of a Charged Charmoniumlike Structure in $e^{+} e^{-} \to (D^{} {\bar{D}}^{})^{\pm} π^{\mp}$ at $\sqrt{s} = 4.26 GeV$
journal, April 2014

Ablikim, M.; Achasov, M. N.; Albayrak, O.
Physical Review Letters, Vol. 112, Issue 13
DOI: 10.1103/PhysRevLett.112.132001

Confirmation of a charged charmoniumlike state $Z_{c} (3885)^{\mp}$ in $e^{+} e^{-} \to π^{\pm} (D {\bar{D}}^{*})^{\mp}$ with double $D$ tag
journal, November 2015

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Physical Review D, Vol. 92, Issue 9
DOI: 10.1103/PhysRevD.92.092006

Branching fraction measurements of $χ_{c 0}$ and $χ_{c 2}$ to $π^{0} π^{0}$ and $η η$
journal, March 2010

Ablikim, M.; Achasov, M. N.; An, L.
Physical Review D, Vol. 81, Issue 5
DOI: 10.1103/PhysRevD.81.052005

Suppressed decay into open charm for the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> being an hybrid
journal, December 2005

Kou, E.; Pene, O.
Physics Letters B, Vol. 631, Issue 4
DOI: 10.1016/j.physletb.2005.09.013

Study of the reaction $e^{+} e^{-} \to J / ψ π^{+} π^{-}$ via initial-state radiation at BABAR
journal, September 2012

Lees, J. P.; Poireau, V.; Tisserand, V.
Physical Review D, Vol. 86, Issue 5
DOI: 10.1103/PhysRevD.86.051102

Four quark interpretation of $Y (4260)$
journal, August 2005

Maiani, L.; Piccinini, F.; Polosa, A. D.
Physical Review D, Vol. 72, Issue 3
DOI: 10.1103/PhysRevD.72.031502

Geant4—a simulation toolkit
journal, July 2003

Agostinelli, S.; Allison, J.; Amako, K.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3
DOI: 10.1016/S0168-9002(03)01368-8

Possible molecule structure of the newly observed $Y (4260)$
journal, September 2005

Liu, Xiang; Zeng, Xiao-Qiang; Li, Xue-Qian
Physical Review D, Vol. 72, Issue 5
DOI: 10.1103/PhysRevD.72.054023

The hidden-charm pentaquark and tetraquark states
journal, June 2016

Chen, Hua-Xing; Chen, Wei; Liu, Xiang
Physics Reports, Vol. 639
DOI: 10.1016/j.physrep.2016.05.004

Coherent exclusive exponentiation for precision Monte Carlo calculations
journal, May 2001

Jadach, S.; Ward, B. F. L.; Wa̧s, Z.
Physical Review D, Vol. 63, Issue 11
DOI: 10.1103/PhysRevD.63.113009

Evidence of a Broad Structure at an Invariant Mass of $4.32 GeV / c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BABAR
journal, May 2007

Aubert, B.; Barate, R.; Bona, M.
Physical Review Letters, Vol. 98, Issue 21
DOI: 10.1103/PhysRevLett.98.212001

Observation of the charged hadron <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msubsup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>3900</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> and evidence for the neutral <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msubsup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>3900</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> in <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>π</mml:mi><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math> at <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>4170</mml:mn><mml:mspace width="0.25em"/><mml:mtext>MeV</mml:mtext></mml:math>
journal, December 2013

Xiao, T.; Dobbs, S.; Tomaradze, A.
Physics Letters B, Vol. 727, Issue 4-5
DOI: 10.1016/j.physletb.2013.10.041

Measurements of the center-of-mass energies at BESIII via the di-muon process
journal, June 2016

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Chinese Physics C, Vol. 40, Issue 6
DOI: 10.1088/1674-1137/40/6/063001

Design and construction of the BESIII detector
journal, March 2010

Ablikim, M.; An, Z. H.; Bai, J. Z.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 614, Issue 3
DOI: 10.1016/j.nima.2009.12.050

Observation of $e^{+} e^{-} \to π^{0} π^{0} h_{c}$ and a Neutral Charmoniumlike Structure $Z_{c} (4020)^{0}$
journal, November 2014

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Physical Review Letters, Vol. 113, Issue 21
DOI: 10.1103/PhysRevLett.113.212002

Limits and confidence intervals in the presence of nuisance parameters
journal, October 2005

Rolke, Wolfgang A.; López, Angel M.; Conrad, Jan
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 551, Issue 2-3
DOI: 10.1016/j.nima.2005.05.068

Observation of a Charged Charmoniumlike Structure in $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ at $\sqrt{s} = 4.26 GeV$
journal, June 2013

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Physical Review Letters, Vol. 110, Issue 25
DOI: 10.1103/PhysRevLett.110.252001

Study of $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ and Observation of a Charged Charmoniumlike State at Belle
journal, June 2013

Liu, Z. Q.; Shen, C. P.; Yuan, C. Z.
Physical Review Letters, Vol. 110, Issue 25
DOI: 10.1103/PhysRevLett.110.252002

Works referencing / citing this record:

Hadronic decays of excited heavy quarkonia
journal, February 1997

Mannel, Thomas; Urech, Res
Zeitschrift f�r Physik C Particles and Fields, Vol. 73, Issue 3
DOI: 10.1007/s002880050344

Limits and confidence intervals in the presence of nuisance parameters
journal, October 2005

Rolke, Wolfgang A.; López, Angel M.; Conrad, Jan
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 551, Issue 2-3
DOI: 10.1016/j.nima.2005.05.068

Design and construction of the BESIII detector
journal, March 2010

Ablikim, M.; An, Z. H.; Bai, J. Z.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 614, Issue 3
DOI: 10.1016/j.nima.2009.12.050

The possible interpretations of Y(4260)
journal, October 2005

Zhu, Shi-Lin
Physics Letters B, Vol. 625, Issue 3-4
DOI: 10.1016/j.physletb.2005.08.068

Suppressed decay into open charm for the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> being an hybrid
journal, December 2005

Kou, E.; Pene, O.
Physics Letters B, Vol. 631, Issue 4
DOI: 10.1016/j.physletb.2005.09.013

Gluonic charmonium resonances at BaBar and Belle?
journal, November 2005

Close, Frank E.; Page, Philip R.
Physics Letters B, Vol. 628, Issue 3-4
DOI: 10.1016/j.physletb.2005.09.016

Masses of heavy tetraquarks in the relativistic quark model
journal, March 2006

Ebert, D.; Faustov, R. N.; Galkin, V. O.
Physics Letters B, Vol. 634, Issue 2-3
DOI: 10.1016/j.physletb.2006.01.026

The <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> as an <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>ω</mml:mi><mml:msub><mml:mi>χ</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:math> molecular state
journal, March 2006

Yuan, C. Z.; Wang, P.; Mo, X. H.
Physics Letters B, Vol. 634, Issue 4
DOI: 10.1016/j.physletb.2006.01.031

One explanation for the exotic state <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Y</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>4260</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>
journal, August 2006

Qiao, Cong-Feng
Physics Letters B, Vol. 639, Issue 3-4
DOI: 10.1016/j.physletb.2006.06.038

Observation of the charged hadron <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msubsup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>3900</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> and evidence for the neutral <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msubsup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>3900</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> in <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>π</mml:mi><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math> at <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>4170</mml:mn><mml:mspace width="0.25em"/><mml:mtext>MeV</mml:mtext></mml:math>
journal, December 2013

Xiao, T.; Dobbs, S.; Tomaradze, A.
Physics Letters B, Vol. 727, Issue 4-5
DOI: 10.1016/j.physletb.2013.10.041

The hidden-charm pentaquark and tetraquark states
journal, June 2016

Chen, Hua-Xing; Chen, Wei; Liu, Xiang
Physics Reports, Vol. 639
DOI: 10.1016/j.physrep.2016.05.004

Event generators at BESIII
journal, August 2008

Rong-Gang, Ping
Chinese Physics C, Vol. 32, Issue 8
DOI: 10.1088/1674-1137/32/8/001

Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
journal, September 2015

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Chinese Physics C, Vol. 39, Issue 9
DOI: 10.1088/1674-1137/39/9/093001

Review of Particle Physics
journal, October 2016

Olive, K. A.
Chinese Physics C, Vol. 40, Issue 10
DOI: 10.1088/1674-1137/40/10/100001

Measurements of the center-of-mass energies at BESIII via the di-muon process
journal, June 2016

Ablikim, M.; Achasov, M. N.; Ai, X. C.
Chinese Physics C, Vol. 40, Issue 6
DOI: 10.1088/1674-1137/40/6/063001

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
journal, February 2010

Actis, S.; Arbuzov, A.; Balossini, G.
The European Physical Journal C, Vol. 66, Issue 3-4
DOI: 10.1140/epjc/s10052-010-1251-4

Heavy quarkonium: progress, puzzles, and opportunities
journal, February 2011

Brambilla, N.; Eidelman, S.; Heltsley, B. K.
The European Physical Journal C, Vol. 71, Issue 2
DOI: 10.1140/epjc/s10052-010-1534-9

Measurement of $e^{+}e^{-} \to \pi^{0}\pi^{0}\psi(3686)$ at $\sqrt{s}$ from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure
text, January 2018

Ablikim, M.; Achasov, M. N.; Ahmed, S.
GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt
DOI: 10.15120/gsi-2019-00667

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Title: Measurement of e + e − → π 0 π 0 ψ ( 3686 ) at s from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure

Abstract

Citation Formats

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data journal, February 2010

Y ( 4260 ) on the lattice journal, May 2006

Study of the reaction e + e − → ψ ( 2 S ) π + π − via initial-state radiation at BaBar journal, June 2014

Confirmation of the Y ( 4260 ) resonance production in initial state radiation journal, November 2006

Observation of a Neutral Structure near the D D ¯ * Mass Threshold in e + e − → ( D D ¯ * ) 0 π 0 at s = 4.226 and 4.257 GeV journal, November 2015

Review of Particle Physics journal, October 2016

Search for hadronic transition χ c J → η c π + π − and observation of χ c J → K K ¯ π π π journal, January 2013

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Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV journal, September 2015

The EvtGen particle decay simulation package journal, April 2001

Measurement of e + e − → π + π − ψ ( 2 S ) via initial state radiation at Belle journal, June 2015

Observation of a Charged Charmoniumlike Structure Z c ( 4020 ) and Search for the Z c ( 3900 ) in e + e − → π + π − h c journal, December 2013

Gauge-Invariant Lagrangians for free and Interacting Higher spin Fields: a Review of the brst Formulation journal, January 2009

Precise Measurement of the e + e − → π + π − J / ψ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV journal, March 2017

Observation of a Neutral Charmoniumlike State Z c ( 4025 ) 0 in e + e − → ( D * D ¯ * ) 0 π 0 journal, October 2015

The precision Monte Carlo event generator for two-fermion final states in collisions journal, August 2000

Study of χ c J radiative decays into a vector meson journal, June 2011

The possible interpretations of Y(4260) journal, October 2005

Hadronic decays of excited heavy quarkonia journal, February 1997

Measurement of the e + e − → π + π − J / ψ Cross Section Via Initial-State Radiation at Belle journal, November 2007

Observation of a Broad Structure in the π + π − J / ψ Mass Spectrum around 4.26 GeV / c 2 journal, September 2005

Observation of Two Resonant Structures in e + e − → π + π − ψ ( 2 S ) via Initial-State Radiation at Belle journal, October 2007

Gluonic charmonium resonances at BaBar and Belle? journal, November 2005

Heavy quarkonium: progress, puzzles, and opportunities journal, February 2011

Masses of heavy tetraquarks in the relativistic quark model journal, March 2006

Observation of Two Charged Bottomoniumlike Resonances in Υ ( 5 S ) Decays journal, March 2012

Measurement of e + e − → π + π − ψ ( 3686 ) from 4.008 to 4.600 GeV and observation of a charged structure in the π ± ψ ( 3686 ) mass spectrum journal, August 2017

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Observation of a Charged Charmoniumlike Structure in e + e − → ( D * D ¯ * ) ± π ∓ at s = 4.26 GeV journal, April 2014

Confirmation of a charged charmoniumlike state Z c ( 3885 ) ∓ in e + e − → π ± ( D D ¯ * ) ∓ with double D tag journal, November 2015

Branching fraction measurements of χ c 0 and χ c 2 to π 0 π 0 and η η journal, March 2010

Study of the reaction e + e − → J / ψ π + π − via initial-state radiation at BABAR journal, September 2012

Four quark interpretation of Y ( 4260 ) journal, August 2005

Geant4—a simulation toolkit journal, July 2003

Possible molecule structure of the newly observed Y ( 4260 ) journal, September 2005

The hidden-charm pentaquark and tetraquark states journal, June 2016

Coherent exclusive exponentiation for precision Monte Carlo calculations journal, May 2001

Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV / c 2 in the Reaction e + e − → π + π − ψ ( 2 S ) Measured at BABAR journal, May 2007

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Design and construction of the BESIII detector journal, March 2010

Observation of e + e − → π 0 π 0 h c and a Neutral Charmoniumlike Structure Z c ( 4020 ) 0 journal, November 2014

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Observation of a Charged Charmoniumlike Structure in e + e − → π + π − J / ψ at s = 4.26 GeV journal, June 2013

Study of e + e − → π + π − J / ψ and Observation of a Charged Charmoniumlike State at Belle journal, June 2013

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Design and construction of the BESIII detector journal, March 2010

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Masses of heavy tetraquarks in the relativistic quark model journal, March 2006

The hidden-charm pentaquark and tetraquark states journal, June 2016

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Title: Measurement of $e^{+} e^{-} \to π^{0} π^{0} ψ (3686)$ at $\sqrt{s}$ from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
journal, February 2010

$Y (4260)$ on the lattice
journal, May 2006

Study of the reaction $e^{+} e^{-} \to ψ (2 S) π^{+} π^{-}$ via initial-state radiation at BaBar
journal, June 2014

Confirmation of the $Y (4260)$ resonance production in initial state radiation
journal, November 2006

Observation of a Neutral Structure near the $D {\bar{D}}^{}$ Mass Threshold in $e^{+} e^{-} \to (D {\bar{D}}^{})^{0} π^{0}$ at $\sqrt{s} = 4.226$ and 4.257 GeV
journal, November 2015

Review of Particle Physics
journal, October 2016

Search for hadronic transition $χ_{c J} \to η_{c} π^{+} π^{-}$ and observation of $χ_{c J} \to K \bar{K} π π π$
journal, January 2013

Observation of a Charged ${(D {\bar{D}}^{})}^{\pm}$ Mass Peak in $e^{+} e^{-} \to π D {\bar{D}}^{}$ at $\sqrt{s} = 4.26 GeV$
journal, January 2014

Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
journal, September 2015

The EvtGen particle decay simulation package
journal, April 2001

Measurement of $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via initial state radiation at Belle
journal, June 2015

Observation of a Charged Charmoniumlike Structure $Z_{c} (4020)$ and Search for the $Z_{c} (3900)$ in $e^{+} e^{-} \to π^{+} π^{-} h_{c}$
journal, December 2013

Gauge-Invariant Lagrangians for free and Interacting Higher spin Fields: a Review of the brst Formulation
journal, January 2009

Precise Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV
journal, March 2017

Observation of a Neutral Charmoniumlike State $Z_{c} (4025)^{0}$ in $e^{+} e^{-} \to (D^{} {\bar{D}}^{})^{0} π^{0}$
journal, October 2015

The precision Monte Carlo event generator for two-fermion final states in collisions
journal, August 2000

Study of $χ_{c J}$ radiative decays into a vector meson
journal, June 2011

The possible interpretations of Y(4260)
journal, October 2005

Hadronic decays of excited heavy quarkonia
journal, February 1997

Measurement of the $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ Cross Section Via Initial-State Radiation at Belle
journal, November 2007

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around $4.26 GeV / c^{2}$
journal, September 2005

Observation of Two Resonant Structures in $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ via Initial-State Radiation at Belle
journal, October 2007

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journal, November 2005

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journal, February 2011

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journal, March 2006

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journal, March 2012

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journal, August 2017

Event generators at BESIII
journal, August 2008

Observation of a Charged Charmoniumlike Structure in $e^{+} e^{-} \to (D^{} {\bar{D}}^{})^{\pm} π^{\mp}$ at $\sqrt{s} = 4.26 GeV$
journal, April 2014

Confirmation of a charged charmoniumlike state $Z_{c} (3885)^{\mp}$ in $e^{+} e^{-} \to π^{\pm} (D {\bar{D}}^{*})^{\mp}$ with double $D$ tag
journal, November 2015

Branching fraction measurements of $χ_{c 0}$ and $χ_{c 2}$ to $π^{0} π^{0}$ and $η η$
journal, March 2010

Study of the reaction $e^{+} e^{-} \to J / ψ π^{+} π^{-}$ via initial-state radiation at BABAR
journal, September 2012

Four quark interpretation of $Y (4260)$
journal, August 2005

Geant4—a simulation toolkit
journal, July 2003

Possible molecule structure of the newly observed $Y (4260)$
journal, September 2005

The hidden-charm pentaquark and tetraquark states
journal, June 2016

Coherent exclusive exponentiation for precision Monte Carlo calculations
journal, May 2001

Evidence of a Broad Structure at an Invariant Mass of $4.32 GeV / c^{2}$ in the Reaction $e^{+} e^{-} \to π^{+} π^{-} ψ (2 S)$ Measured at BABAR
journal, May 2007

Measurements of the center-of-mass energies at BESIII via the di-muon process
journal, June 2016

Design and construction of the BESIII detector
journal, March 2010

Observation of $e^{+} e^{-} \to π^{0} π^{0} h_{c}$ and a Neutral Charmoniumlike Structure $Z_{c} (4020)^{0}$
journal, November 2014

Limits and confidence intervals in the presence of nuisance parameters
journal, October 2005

Observation of a Charged Charmoniumlike Structure in $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ at $\sqrt{s} = 4.26 GeV$
journal, June 2013

Study of $e^{+} e^{-} \to π^{+} π^{-} J / ψ$ and Observation of a Charged Charmoniumlike State at Belle
journal, June 2013

Hadronic decays of excited heavy quarkonia
journal, February 1997

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journal, October 2005

Design and construction of the BESIII detector
journal, March 2010

The possible interpretations of Y(4260)
journal, October 2005

Gluonic charmonium resonances at BaBar and Belle?
journal, November 2005

Masses of heavy tetraquarks in the relativistic quark model
journal, March 2006

The hidden-charm pentaquark and tetraquark states
journal, June 2016

Event generators at BESIII
journal, August 2008

Precision measurement of the integrated luminosity of the data taken by BESIII at center-of-mass energies between 3.810 GeV and 4.600 GeV
journal, September 2015

Review of Particle Physics
journal, October 2016

Measurements of the center-of-mass energies at BESIII via the di-muon process
journal, June 2016

Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
journal, February 2010

Heavy quarkonium: progress, puzzles, and opportunities
journal, February 2011

Measurement of $e^{+}e^{-} \to \pi^{0}\pi^{0}\psi(3686)$ at $\sqrt{s}$ from 4.009 to 4.600 GeV and observation of a neutral charmoniumlike structure
text, January 2018