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Title: Measurement of the phase between strong and electromagnetic amplitudes of J/ψ decays

Abstract

Using 16 energy points of e + e - annihilation data collected in the vicinity of the J / ψ resonance with the BESIII detector and with a total integrated luminosity of around 100 pb - 1 , we study the relative phase between the strong and electromagnetic amplitudes of J / ψ decays. The relative phase between J / ψ electromagnetic decay and the continuum process ( e + e - annihilation without the J / ψ resonance) is confirmed to be zero by studying the cross section lineshape of μ + μ - production. The relative phase between J / ψ strong and electromagnetic decays is then measured to be ( 84.9 ± 3.6 ) ° or ( - 84.7 ± 3.1 ) ° for the 2 ( π + π - ) π 0 final state by investigating the interference pattern between the J / ψ decay and the continuum process. This is the first measurement of the relative phase between J / ψ strong and electromagnetic decays into a multihadron final state using the lineshape of the production cross section. We also study the production lineshape of the multihadron final state η π + π - with η π + π - π 0 , which provides additional information about the phase between the J / ψ electromagnetic decay amplitude and the continuum process. Additionally, the branching fraction of J / ψ 2 ( π + π - ) π 0 is measured to be ( 4.73 ± 0.44 ) % or ( 4.85 ± 0.45 ) % , and the branching fraction of J / ψ η π + π - is measured to be ( 3.78 ± 0.68 ) × 10 - 4 . Both of them are consistent with the world average values. The quoted uncertainties include both statistical and systematic uncertainties, which are mainly caused by the low statistics.

Authors:
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Publication Date:
Research Org.:
Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Hawaii, Honolulu, HI (United States); Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
BESIII Collaboration
OSTI Identifier:
1504142
Grant/Contract Number:  
FG02-05ER41374; SC0010118; SC0010504; SC0012069
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 791; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; phase; strong amplitude; electromagnetic amplitude; decay; BESIII

Citation Formats

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, Y., 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, P. 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., 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., 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, 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., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Khoukaz, A., Kiese, P., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuessner, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leiber, S., 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, K. J., Li, Kang, 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., 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. M., Liu, Huanhuan, Liu, Huihui, 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, 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, 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., 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., Morello, G., Muchnoi, N. Yu., Muramatsu, H., 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., Papenbrock, M., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rolo, 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, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, L., 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., 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, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., 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., 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, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, 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., Zallo, 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. H., Zhang, Y. T., 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, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, J., 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., and Zou, J. H. Measurement of the phase between strong and electromagnetic amplitudes of J/ψ decays. United States: N. p., 2019. Web. doi:10.1016/j.physletb.2019.03.001.
Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, Y., 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, P. 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., 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., 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, 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., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Khoukaz, A., Kiese, P., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuessner, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leiber, S., 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, K. J., Li, Kang, 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., 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. M., Liu, Huanhuan, Liu, Huihui, 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, 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, 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., 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., Morello, G., Muchnoi, N. Yu., Muramatsu, H., 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., Papenbrock, M., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rolo, 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, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, L., 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., 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, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., 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., 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, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, 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., Zallo, 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. H., Zhang, Y. T., 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, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, J., 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. Measurement of the phase between strong and electromagnetic amplitudes of J/ψ decays. United States. doi:10.1016/j.physletb.2019.03.001.
Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, Y., 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, P. 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., 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., 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, 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., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Khoukaz, A., Kiese, P., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuessner, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leiber, S., 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, K. J., Li, Kang, 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., 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. M., Liu, Huanhuan, Liu, Huihui, 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, 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, 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., 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., Morello, G., Muchnoi, N. Yu., Muramatsu, H., Mustafa, A., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. 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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, J., 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., and Zou, J. H. Wed . "Measurement of the phase between strong and electromagnetic amplitudes of J/ψ decays". United States. doi:10.1016/j.physletb.2019.03.001. https://www.osti.gov/servlets/purl/1504142.
@article{osti_1504142,
title = {Measurement of the phase between strong and electromagnetic amplitudes of J/ψ decays},
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, Y. 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, P. 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 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 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, 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 Jin, Y. 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 Khoukaz, A. and Kiese, P. and Kliemt, R. and Koch, L. and Kolcu, O. B. and Kopf, B. and Kornicer, M. and Kuemmel, M. and Kuessner, M. and Kuhlmann, M. and Kupsc, A. and Kühn, W. and Lange, J. S. and Lara, M. 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, F. Y. and Li, G. and Li, H. B. and Li, H. J. and Li, J. C. and Li, K. J. and Li, Kang 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 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. M. and Liu, Huanhuan and Liu, Huihui 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, 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, 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 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 Morello, G. and Muchnoi, N. Yu. and Muramatsu, H. 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 Papenbrock, M. 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 Pitka, A. and Poling, R. and Prasad, V. and Qi, H. R. and Qi, M. and Qian, S. and Qiao, C. F. 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 Rolo, 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, W. M. and Song, X. Y. and Sosio, S. and Sowa, C. and Spataro, S. and Sun, G. X. and Sun, J. F. and Sun, L. 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. 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, 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, Y. Q. and Wang, Z. and Wang, Z. G. and Wang, Z. H. 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 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, 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 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 Zallo, 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. H. and Zhang, Y. T. 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, X. and Zhou, X. K. and Zhou, X. R. and Zhou, X. Y. and Zhou, Y. X. and Zhu, J. 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.},
abstractNote = {Using 16 energy points of e+e- annihilation data collected in the vicinity of the J/ψ resonance with the BESIII detector and with a total integrated luminosity of around 100pb-1, we study the relative phase between the strong and electromagnetic amplitudes of J/ψ decays. The relative phase between J/ψ electromagnetic decay and the continuum process (e+e- annihilation without the J/ψ resonance) is confirmed to be zero by studying the cross section lineshape of μ+μ- production. The relative phase between J/ψ strong and electromagnetic decays is then measured to be (84.9±3.6)° or (-84.7±3.1)° for the 2(π+π-)π0 final state by investigating the interference pattern between the J/ψ decay and the continuum process. This is the first measurement of the relative phase between J/ψ strong and electromagnetic decays into a multihadron final state using the lineshape of the production cross section. We also study the production lineshape of the multihadron final state ηπ+π- with η→π+π-π0, which provides additional information about the phase between the J/ψ electromagnetic decay amplitude and the continuum process. Additionally, the branching fraction of J/ψ→2(π+π-)π0 is measured to be (4.73±0.44)% or (4.85±0.45)%, and the branching fraction of J/ψ→ηπ+π- is measured to be (3.78±0.68)×10-4. Both of them are consistent with the world average values. The quoted uncertainties include both statistical and systematic uncertainties, which are mainly caused by the low statistics.},
doi = {10.1016/j.physletb.2019.03.001},
journal = {Physics Letters. Section B},
number = ,
volume = 791,
place = {United States},
year = {2019},
month = {3}
}

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