Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Begzsuren, K.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Boyko, I.; Briere, R. A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chai, J.; Chang, J. F.; Chang, W. L.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, P. L.; Chen, S. J.; Chen, Y. B.; Cheng, W.; Cibinetto, G.; Cossio, F.; 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.; Dou, Z. L.; Du, S. X.; Duan, P. F.; Fan, J. Z.; Fang, J.; Fang, S. S.; Fang, Y.; Farinelli, R.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fritsch, M.; Fu, C. D.; Fu, Y.; Gao, X. L.; Gao, Y.; Gao, Y. G.; Gao, Z.; Garzia, I.; Gilman, A.; Goetzen, K.; Gong, L.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, L. M.; Gu, M. H.; Gu, S.; Gu, Y. T.; Guo, A. Q.; Guo, L. B.; Guo, R. P.; Guo, Y. P.; Guskov, A.; Haddadi, Z.; Han, S.; Hao, X. Q.; Harris, F. A.; He, K. L.; Heinsius, F. H.; Held, T.; Heng, Y. K.; Holtmann, T.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. S.; Huang, J. S.; Huang, X. T.; Huang, X. Z.; Huesken, N.; Hussain, T.; Ikegami Andersson, W.; Irshad, M.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, H. B.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jin, Y.; Johansson, T.; Julin, A.; Kalantar-Nayestanaki, N.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Keshk, I. K.; Khan, T.; Khoukaz, A.; Kiese, P.; Kiuchi, R.; Kliemt, R.; Koch, L.; Kolcu, O. B.; Kopf, B.; Kuemmel, M.; Kuessner, M.; Kupsc, A.; Kühn, W.; Lange, J. S.; Larin, P.; Lavezzi, L.; Leiber, S.; Leithoff, H.; Leng, C.; Li, C.; Li, Cheng; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, H. J.; Li, J. C.; Li, J. W.; Li, Ke; 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.; Liao, L. Z.; Libby, J.; Lin, C. X.; Lin, D. X.; Liu, B.; Liu, B. J.; Liu, C. X.; Liu, D.; Liu, D. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. J.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. B.; Liu, J. Y.; Liu, K. Y.; Liu, Ke; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqing; Long, Y. F.; Lou, X. C.; Lu, H. J.; Lu, J. D.; Lu, J. G.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, P. W.; Luo, T.; Luo, X. L.; Lusso, S.; Lyu, X. R.; Ma, F. C.; Ma, H. L.; Ma, L. L.; Ma, M. M.; Ma, Q. M.; Ma, X. N.; Ma, X. X.; Ma, X. Y.; Ma, Y. M.; Maas, F. E.; Maggiora, M.; Maldaner, S.; Malik, Q. A.; Mangoni, A.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Meng, Z. X.; Messchendorp, J. G.; Mezzadri, G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Morales Morales, C.; Muchnoi, N. Yu.; Muramatsu, H.; Mustafa, A.; Nakhoul, S.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pan, Y.; Papenbrock, M.; Patteri, P.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Pettersson, J.; Ping, J. L.; Ping, R. G.; Pitka, A.; Poling, R.; Prasad, V.; Qi, H. R.; Qi, M.; Qi, T. Y.; Qian, S.; Qiao, C. F.; Qin, N.; Qin, X. S.; Qin, Z. H.; Qiu, J. F.; Qu, S. Q.; Rashid, K. H.; Ravindran, K.; Redmer, C. F.; Richter, M.; Rivetti, A.; Rolo, M.; Rong, G.; Rosner, Ch.; Rump, M.; Sarantsev, A.; Savrié, M.; Schnier, C.; Schoenning, K.; Shan, W.; Shan, X. Y.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Sheng, H. Y.; Shi, X.; Song, J. J.; Song, W. M.; Song, X. Y.; Sosio, S.; Sowa, C.; Spataro, S.; Sui, F. F.; Sun, G. X.; Sun, J. F.; Sun, L.; Sun, S. S.; Sun, Y. J.; Sun, Y. K.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tan, Y. X.; Tang, C. J.; Tang, G. Y.; Tang, X.; Tiemens, M.; Tsednee, B.; Uman, I.; Wang, B.; Wang, B. L.; Wang, C. W.; Wang, D. Y.; Wang, H. H.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, Meng; Wang, P.; Wang, P. L.; Wang, W. P.; Wang, X. F.; Wang, Y.; Wang, Y. D.; Wang, Y. F.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wang, Zongyuan; 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, X.; Xiao, D.; 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, X. P.; Yan, F.; Yan, L.; Yan, W. B.; Yan, W. C.; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, R. X.; Yang, S. L.; Yang, Y. H.; Yang, Y. X.; Yang, Yifan; 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.; 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. F.; Zhang, T. J.; Zhang, X. Y.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yan; Zhang, Yang; Zhang, Yao; 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, Q.; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhou, X. Y.; Zhu, A. N.; Zhu, J.; Zhu, K.; Zhu, K. J.; Zhu, S.; Zhu, S. H.; Zhu, X. L.; Zhu, Y. C.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.

doi:10.1103/PhysRevD.100.111102

Title: Study of $e^{+} e^{-} \to π^{+} π^{-} π^{0} η_{c}$ and evidence for $Z_{c} (3900)^{\pm}$ decaying into $ρ^{\pm} η_{c}$

Abstract

We study the reaction $$e^+e^– → π^+π^–π^0η_c$$ for the first time using data samples collected with the BESIII detector at center-of-mass energies $$\sqrt{s}$$ = 4.226 , 4.258, 4.358, 4.416, and 4.600 GeV. Evidence of this process is found and the Born cross section $$σ^B (e^+e^– → π^+π^–π^0η_c$$), excluding $$e^+e^– → ωη_c$$ and $$ηη_c$$, is measured to be ($$46^{+12}_{–11} ± 10$$) pb at $$\sqrt{s}$$ = 4.226 GeV. Evidence for the decay $$Z_c(3900)^± → ρ^±η_c$$ is reported at $$\sqrt{s}$$ = 4.226 GeV with a significance of 3.9σ, including systematic uncertainties, and the Born cross section times branching fraction $$σ^B(e^+e^– → π^∓Z_c(3900)^±) × \mathcal{B}(Z_c(3900)^± → ρ^±η_c)$$ is measured to be (48 ± 11 ± 11) pb, which indicates that $$e^+e^– → π^∓Z_c( 3900)^± → π^∓ρ^±η_c$$ dominates the $$e^+e^– → π^+π^–π^0η_c$$ process. The $$Z_c(3900)^± → ρ^±η_c$$ signal is not significant at the other center-of-mass energies and the corresponding upper limits are determined. In addition, no significant signal is observed in a search for $$Z_c(4020)^± → ρ^±η_c$$ with the same data samples. The ratios $$R_{Z_c(3900)} = \mathcal{B}(Z_c(3900)^± → ρ^±η_c)/ \mathcal{B}(Z_c(3900)^± → π^± J / ψ)$$ and $$R_{Z_{c(4020)}} = \mathcal{B}(Z_c(4020)^± → ρ^±η_c)/\mathcal{B}(Z_c(4020)^± → π^±h_c)$$ are obtained and compared with different theoretical interpretations of the $$Z_c(3900)^±$$ and $$Z_c(4020)^±$$.

Authors:

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Begzsuren, K.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Boyko, I. more »

Publication Date:: 2019-12-24

Research Org.:: Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

Contributing Org.:: BESIII Collaboration

OSTI Identifier:: 1580303

Alternate Identifier(s):: OSTI ID: 1800284

Grant/Contract Number:: FG02-05ER41374; SC-0010118; SC-0012069; SC0010118; SC0012069

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 11; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics

Citation Formats


                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., An, F. F., An, Q., Bai, Y., Bakina, O., Baldini Ferroli, R., Ban, Y., Begzsuren, K., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Boyko, I., Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chang, W. L., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, Y. B., Cheng, W., Cibinetto, G., Cossio, F., 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., Dou, Z. L., Du, S. X., Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fritsch, M., Fu, C. D., Fu, Y., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Gilman, A., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, L. M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Guskov, A., Haddadi, Z., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huesken, N., Hussain, T., Ikegami Andersson, W., Irshad, M., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, H. B., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. S., Kavatsyuk, M., Ke, B. C., Keshk, I. K., Khan, T., Khoukaz, A., Kiese, P., Kiuchi, R., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kuemmel, M., Kuessner, M., Kupsc, A., Kühn, W., Lange, J. S., Larin, P., Lavezzi, L., Leiber, S., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. W., Li, Ke, 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., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. J., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, Ke, Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. D., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Maldaner, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Muchnoi, N. Yu., Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qi, T. Y., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Qu, S. Q., Rashid, K. H., Ravindran, K., Redmer, C. F., Richter, M., Rivetti, A., Rolo, M., Rong, G., Rosner, Ch., Rump, M., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Song, J. J., Song, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. X., Tang, C. J., Tang, G. Y., Tang, X., Tiemens, M., Tsednee, B., Uman, I., Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Zongyuan, 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, X., Xiao, D., 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, X. P., Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Yifan, 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., 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. F., Zhang, T. J., Zhang, X. Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yan, Zhang, Yang, Zhang, Yao, 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, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, A. N., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., and BESIII Collaboration. Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevD.100.111102.

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                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., An, F. F., An, Q., Bai, Y., Bakina, O., Baldini Ferroli, R., Ban, Y., Begzsuren, K., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Boyko, I., Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chang, W. L., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, Y. B., Cheng, W., Cibinetto, G., Cossio, F., 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., Dou, Z. L., Du, S. X., Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fritsch, M., Fu, C. D., Fu, Y., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Gilman, A., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, L. M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Guskov, A., Haddadi, Z., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huesken, N., Hussain, T., Ikegami Andersson, W., Irshad, M., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, H. B., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. S., Kavatsyuk, M., Ke, B. C., Keshk, I. K., Khan, T., Khoukaz, A., Kiese, P., Kiuchi, R., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kuemmel, M., Kuessner, M., Kupsc, A., Kühn, W., Lange, J. S., Larin, P., Lavezzi, L., Leiber, S., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. W., Li, Ke, 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., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. J., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, Ke, Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. D., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Maldaner, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Muchnoi, N. Yu., Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qi, T. Y., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Qu, S. Q., Rashid, K. H., Ravindran, K., Redmer, C. F., Richter, M., Rivetti, A., Rolo, M., Rong, G., Rosner, Ch., Rump, M., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Song, J. J., Song, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. X., Tang, C. J., Tang, G. Y., Tang, X., Tiemens, M., Tsednee, B., Uman, I., Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Zongyuan, 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, X., Xiao, D., 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, X. P., Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Yifan, 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., 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. F., Zhang, T. J., Zhang, X. Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yan, Zhang, Yang, Zhang, Yao, 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, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, A. N., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., & BESIII Collaboration. Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c.  United States.  https://doi.org/10.1103/PhysRevD.100.111102

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                    Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., An, F. F., An, Q., Bai, Y., Bakina, O., Baldini Ferroli, R., Ban, Y., Begzsuren, K., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Boyko, I., Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chang, W. L., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, Y. B., Cheng, W., Cibinetto, G., Cossio, F., 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., Dou, Z. L., Du, S. X., Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fritsch, M., Fu, C. D., Fu, Y., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Gilman, A., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, L. M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Guskov, A., Haddadi, Z., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huesken, N., Hussain, T., Ikegami Andersson, W., Irshad, M., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, H. B., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. S., Kavatsyuk, M., Ke, B. C., Keshk, I. K., Khan, T., Khoukaz, A., Kiese, P., Kiuchi, R., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kuemmel, M., Kuessner, M., Kupsc, A., Kühn, W., Lange, J. S., Larin, P., Lavezzi, L., Leiber, S., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. W., Li, Ke, 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., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. J., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, Ke, Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. D., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Maldaner, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales Morales, C., Muchnoi, N. Yu., Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qi, T. Y., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Qu, S. Q., Rashid, K. H., Ravindran, K., Redmer, C. F., Richter, M., Rivetti, A., Rolo, M., Rong, G., Rosner, Ch., Rump, M., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Song, J. J., Song, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. X., Tang, C. J., Tang, G. Y., Tang, X., Tiemens, M., Tsednee, B., Uman, I., Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Zongyuan, 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, X., Xiao, D., 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, X. P., Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Yifan, 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., 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. F., Zhang, T. J., Zhang, X. Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yan, Zhang, Yang, Zhang, Yao, 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, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, A. N., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., and BESIII Collaboration. Tue .  
"Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c".  United States.  https://doi.org/10.1103/PhysRevD.100.111102.

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@article{osti_1580303,

  title        = {Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c},

  author       = {Ablikim, M. and Achasov, M. N. and Ahmed, S. and Albrecht, M. and Alekseev, M. and Amoroso, A. and An, F. F. and An, Q. and Bai, Y. and Bakina, O. and Baldini Ferroli, R. and Ban, Y. and Begzsuren, K. and Bennett, D. W. and Bennett, J. V. and Berger, N. and Bertani, M. and Bettoni, D. and Bianchi, F. and Boyko, I. and Briere, R. A. and Cai, H. and Cai, X. and Calcaterra, A. and Cao, G. F. and Cetin, S. A. and Chai, J. and Chang, J. F. and Chang, W. L. and Chelkov, G. and Chen, G. and Chen, H. S. and Chen, J. C. and Chen, M. L. and Chen, P. L. and Chen, S. J. and Chen, Y. B. and Cheng, W. and Cibinetto, G. and Cossio, F. 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 Dou, Z. L. and Du, S. X. and Duan, P. F. and Fan, J. Z. and Fang, J. and Fang, S. S. and Fang, Y. and Farinelli, R. and Fava, L. and Feldbauer, F. and Felici, G. and Feng, C. Q. and Fritsch, M. and Fu, C. D. and Fu, Y. and Gao, X. L. and Gao, Y. and Gao, Y. G. and Gao, Z. and Garzia, I. and Gilman, A. and Goetzen, K. and Gong, L. and Gong, W. X. and Gradl, W. and Greco, M. and Gu, L. 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 Guskov, A. and Haddadi, Z. and Han, S. and Hao, X. Q. and Harris, F. A. and He, K. L. and Heinsius, F. H. and Held, T. and Heng, Y. K. and Holtmann, T. and Hou, Z. L. and Hu, H. M. and Hu, J. F. and Hu, T. and Hu, Y. and Huang, G. S. and Huang, J. S. and Huang, X. T. and Huang, X. Z. and Huesken, N. and Hussain, T. and Ikegami Andersson, W. and Irshad, M. and Ji, Q. and Ji, Q. P. and Ji, X. B. and Ji, X. L. and Jiang, H. B. and Jiang, X. S. and Jiang, X. Y. and Jiao, J. B. and Jiao, Z. and Jin, D. P. and Jin, S. and Jin, Y. and Johansson, T. and Julin, A. and Kalantar-Nayestanaki, N. and Kang, X. S. and Kavatsyuk, M. and Ke, B. C. and Keshk, I. K. and Khan, T. and Khoukaz, A. and Kiese, P. and Kiuchi, R. and Kliemt, R. and Koch, L. and Kolcu, O. B. and Kopf, B. and Kuemmel, M. and Kuessner, M. and Kupsc, A. and Kühn, W. and Lange, J. S. and Larin, P. and Lavezzi, L. and Leiber, S. and Leithoff, H. and Leng, C. and Li, C. and Li, Cheng and Li, D. M. and Li, F. and Li, G. and Li, H. B. and Li, H. J. and Li, J. C. and Li, J. W. and Li, Ke 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 Liao, L. Z. and Libby, J. and Lin, C. X. and Lin, D. X. and Liu, B. and Liu, B. J. and Liu, C. X. and Liu, D. and Liu, D. Y. and Liu, F. H. and Liu, Fang and Liu, Feng and Liu, H. B. and Liu, H. J. and Liu, H. M. and Liu, Huanhuan and Liu, Huihui and Liu, J. B. and Liu, J. Y. and Liu, K. Y. and Liu, Ke and Liu, Q. and Liu, S. B. and Liu, X. and Liu, Y. B. and Liu, Z. A. and Liu, Zhiqing and Long, Y. F. and Lou, X. C. and Lu, H. J. and Lu, J. D. and Lu, J. G. and Lu, Y. and Lu, Y. P. and Luo, C. L. and Luo, M. X. and Luo, P. W. and Luo, T. and Luo, X. L. and Lusso, S. 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, X. N. and Ma, X. X. and Ma, X. Y. and Ma, Y. M. and Maas, F. E. and Maggiora, M. and Maldaner, S. and Malik, Q. A. and Mangoni, A. and Mao, Y. J. and Mao, Z. P. and Marcello, S. and Meng, Z. X. 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 Muchnoi, N. Yu. and Muramatsu, H. and Mustafa, A. and Nakhoul, S. and Nefedov, Y. and Nerling, F. and Nikolaev, I. B. and Ning, Z. and Nisar, S. and Niu, S. L. and Olsen, S. L. and Ouyang, Q. and Pacetti, S. and Pan, Y. and Papenbrock, M. and Patteri, P. and Pelizaeus, M. and Peng, H. P. and Peters, K. and Pettersson, J. and Ping, J. L. and Ping, R. G. and Pitka, A. and Poling, R. and Prasad, V. and Qi, H. R. and Qi, M. and Qi, T. Y. and Qian, S. and Qiao, C. F. and Qin, N. and Qin, X. S. and Qin, Z. H. and Qiu, J. F. and Qu, S. Q. and Rashid, K. H. and Ravindran, K. and Redmer, C. F. and Richter, M. and Rivetti, A. and Rolo, M. and Rong, G. and Rosner, Ch. and Rump, M. and Sarantsev, A. and Savrié, M. and Schnier, C. and Schoenning, K. and Shan, W. and Shan, X. Y. and Shao, M. and Shen, C. P. and Shen, P. X. and Shen, X. Y. and Sheng, H. Y. and Shi, X. and Song, J. J. and Song, W. M. and Song, X. Y. and Sosio, S. and Sowa, C. and Spataro, S. and Sui, F. F. and Sun, G. X. and Sun, J. F. and Sun, L. and Sun, S. S. and Sun, Y. J. and Sun, Y. K. and Sun, Y. Z. and Sun, Z. J. and Sun, Z. T. and Tan, Y. X. and Tang, C. J. and Tang, G. Y. and Tang, X. and Tiemens, M. and Tsednee, B. and Uman, I. and Wang, B. and Wang, B. L. and Wang, C. W. and Wang, D. Y. and Wang, H. H. and Wang, K. and Wang, L. L. and Wang, L. S. and Wang, M. and Wang, Meng and Wang, P. and Wang, P. L. and Wang, W. P. and Wang, X. F. and Wang, Y. and Wang, Y. D. and Wang, Y. F. and Wang, Z. and Wang, Z. G. and Wang, Z. Y. and Wang, Zongyuan 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, X. and Xiao, D. 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, X. P. and Yan, F. and Yan, L. and Yan, W. B. and Yan, W. C. and Yang, H. J. and Yang, H. X. and Yang, L. and Yang, R. X. and Yang, S. L. and Yang, Y. H. and Yang, Y. X. and Yang, Yifan 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 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. F. and Zhang, T. J. and Zhang, X. Y. and Zhang, Y. H. and Zhang, Y. T. and Zhang, Yan and Zhang, Yang and Zhang, Yao 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, Q. and Zhou, X. and Zhou, X. K. and Zhou, X. R. and Zhou, X. Y. and Zhu, A. N. and Zhu, J. 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 Zou, B. S. and Zou, J. H. and BESIII Collaboration},

  abstractNote = {We study the reaction $e^+e^– → π^+π^–π^0η_c$ for the first time using data samples collected with the BESIII detector at center-of-mass energies $\sqrt{s}$ = 4.226 , 4.258, 4.358, 4.416, and 4.600 GeV. Evidence of this process is found and the Born cross section $σ^B (e^+e^– → π^+π^–π^0η_c$), excluding $e^+e^– → ωη_c$ and $ηη_c$, is measured to be ($46^{+12}_{–11} ± 10$) pb at $\sqrt{s}$ = 4.226 GeV. Evidence for the decay $Z_c(3900)^± → ρ^±η_c$ is reported at $\sqrt{s}$ = 4.226 GeV with a significance of 3.9σ, including systematic uncertainties, and the Born cross section times branching fraction $σ^B(e^+e^– → π^∓Z_c(3900)^±) × \mathcal{B}(Z_c(3900)^± → ρ^±η_c)$ is measured to be (48 ± 11 ± 11) pb, which indicates that $e^+e^– → π^∓Z_c( 3900)^± → π^∓ρ^±η_c$ dominates the $e^+e^– → π^+π^–π^0η_c$ process. The $Z_c(3900)^± → ρ^±η_c$ signal is not significant at the other center-of-mass energies and the corresponding upper limits are determined. In addition, no significant signal is observed in a search for $Z_c(4020)^± → ρ^±η_c$ with the same data samples. The ratios $R_{Z_c(3900)} = \mathcal{B}(Z_c(3900)^± → ρ^±η_c)/ \mathcal{B}(Z_c(3900)^± → π^± J / ψ)$ and $R_{Z_{c(4020)}} = \mathcal{B}(Z_c(4020)^± → ρ^±η_c)/\mathcal{B}(Z_c(4020)^± → π^±h_c)$ are obtained and compared with different theoretical interpretations of the $Z_c(3900)^±$ and $Z_c(4020)^±$.},

  doi          = {10.1103/PhysRevD.100.111102},

  journal      = {Physical Review D},

  number       = 11,

  volume       = 100,

  place        = {United States},

  year         = {2019},

  month        = {12}

}

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Title: Study of e + e − → π + π − π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c

Abstract

Citation Formats

PHOTOS Monte Carlo: a precision tool for QED correctionsin Z and W decays journal, January 2006

J P G = 1 ++ charged resonance in the Υ ( 4260 ) → π + π − J / ψ decay? journal, June 2013

Charmonium journal, October 2008

Observation of a Charged ( D D ¯ * ) ± Mass Peak in e + e − → π D D ¯ * at s = 4.26 GeV journal, January 2014

Four-quark structure of the Z c ( 3900 ) , Z ( 4430 ) , and X b ( 5568 ) states journal, November 2016

Diquark-antidiquark states with hidden or open charm and the nature of X ( 3872 ) journal, January 2005

The EvtGen particle decay simulation package journal, April 2001

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

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

Hadro-charmonium journal, September 2008

Z c ( 3900 ) —what is inside? journal, May 2013

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

Z c + ( 3900 ) decay width in QCD sum rules journal, July 2013

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

Observation of e + e − → η h c at center-of-mass energies from 4.085 to 4.600 GeV journal, July 2017

Decay width of $Z_{c} ^{+}$ and $Z_b ^{+}$ states as di-mesonic molecular state conference, April 2014

Hadronic contributions to electroweak parameter shifts: A detailed analysis journal, June 1986

Is Z c (3900) a molecular state? journal, October 2013

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

Analysis of the X ( 3872 ) , Z c ( 3900 ) , and Z c ( 3885 ) as axial-vector tetraquark states with QCD sum rules journal, March 2014

Evidence for e + e − → γ η c ( 1 S ) at center-of-mass energies between 4.01 and 4.60 GeV journal, September 2017

Review of Particle Physics journal, August 2018

Determination of the Spin and Parity of the Z c ( 3900 ) journal, August 2017

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

Probing the nature of Z c ( ′ ) states via the η c ρ decay journal, June 2015

Strong Z c + ( 3900 ) → J / ψ π + ; η c ρ + decays in QCD journal, April 2016

Geant4—a simulation toolkit journal, July 2003

The decay width of the $$Z_c(3900)$$Zc(3900) as an axialvector tetraquark state in solid quark–hadron duality journal, January 2018

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

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

Design and construction of the BESIII detector journal, March 2010

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

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

Title: Study of $e^{+} e^{-} \to π^{+} π^{-} π^{0} η_{c}$ and evidence for $Z_{c} (3900)^{\pm}$ decaying into $ρ^{\pm} η_{c}$

PHOTOS Monte Carlo: a precision tool for QED correctionsin Z and W decays
journal, January 2006

$J^{P G} = 1^{++}$ charged resonance in the $Υ (4260) \to π^{+} π^{-} J / ψ$ decay?
journal, June 2013

Charmonium
journal, October 2008

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

Four-quark structure of the $Z_{c} (3900)$ , $Z (4430)$ , and $X_{b} (5568)$ states
journal, November 2016

Diquark-antidiquark states with hidden or open charm and the nature of $X (3872)$
journal, January 2005

The EvtGen particle decay simulation package
journal, April 2001

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

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

Hadro-charmonium
journal, September 2008

$Z_{c} (3900)$ —what is inside?
journal, May 2013

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

$Z_{c}^{+} (3900)$ decay width in QCD sum rules
journal, July 2013

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

Observation of $e^{+} e^{-} \to η h_{c}$ at center-of-mass energies from 4.085 to 4.600 GeV
journal, July 2017

Decay width of $Z_{c} ^{+}$ and $Z_b ^{+}$ states as di-mesonic molecular state
conference, April 2014

Hadronic contributions to electroweak parameter shifts: A detailed analysis
journal, June 1986

Is Z c (3900) a molecular state?
journal, October 2013

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

Analysis of the $X (3872)$ , $Z_{c} (3900)$ , and $Z_{c} (3885)$ as axial-vector tetraquark states with QCD sum rules
journal, March 2014

Evidence for $e^{+} e^{-} \to γ η_{c} (1 S)$ at center-of-mass energies between 4.01 and 4.60 GeV
journal, September 2017

Review of Particle Physics
journal, August 2018

Determination of the Spin and Parity of the $Z_{c} (3900)$
journal, August 2017

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

Probing the nature of $Z_{c}^{(')}$ states via the $η_{c} ρ$ decay
journal, June 2015

Strong $Z_{c}^{+} (3900) \to J / ψ π^{+}$ ; $η_{c} ρ^{+}$ decays in QCD
journal, April 2016

Geant4—a simulation toolkit
journal, July 2003

The decay width of the $$Z_c(3900)$$Zc(3900) as an axialvector tetraquark state in solid quark–hadron duality
journal, January 2018

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

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

Design and construction of the BESIII detector
journal, March 2010

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

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