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

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

doi:10.1103/physrevd.96.032004

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

Atıf İçin Kopyala

Ablikim M., Achasov M. N., Ahmed S., Ai X. C., Albayrak O., Albrecht M., ...Daha Fazla

PHYSICAL REVIEW D, cilt.96, sa.3, 2017 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 96 Sayı: 3
Basım Tarihi: 2017
Doi Numarası: 10.1103/physrevd.96.032004
Dergi Adı: PHYSICAL REVIEW D
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

We study the process e(+)e(-) -> p(+)p(-)psi(3686) using 5.1 fb(-1) of data collected at 16 center-of-mass energy (root s) points from 4.008 to 4.600 GeV by the BESIII detector operating at the BEPCII collider. The measured Born cross sections for e(+)e(-) -> p(+)p(-)psi(3686) are consistent with previous results, but with much improved precision. A fit to the cross section shows contributions from two structures: the first has M = 4209.5 +/- 7.4 +/- 1.4 MeV/c(2) and Gamma = 80.1 +/- 24.6 +/- 2.9 MeV, and the second has M = 4383.8 +/- 4.2 +/- 0.8 MeV/c(2) and Gamma = 84.2 +/- 12.5 +/- 2.1 MeV, where the first errors are statistical and the second systematic. The lower-mass resonance is observed in the process e(+)e(-) -> p(+)p(-)psi(3686) for the first time with a statistical significance of 5.8 sigma. A charged charmoniumlike structure is observed in the pi(+/-)psi(3686) invariant mass spectrum for data at root s = 4.416 GeV. A fit with an S-wave Breit-Wigner function yields a mass M = 4032.1 +/- 2.4 MeV/c(2), where the errors are statistical only. However, there are still unresolved discrepancies between the fit model and data. The width of the intermediate state varies in a wide range for different kinematic regions within the data set. Therefore, no simple interpretation of the data has been found, and a future data sample with larger statistics and more theoretical input will be required to better understand this issue.

Measurement of <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → π<SUP>+</SUP>π<SUP>-</SUP> ψ(3686) from 4.008 to 4.600 GeV and observation of a charged structure in the π<SUP>±</SUP>ψ(3686) mass spectrum

Özet