Observation of a Charged Charmoniumlike Structure Zc (4020) and Search for the Zc (3900) in e+e- → π+ π-hc

Ablikim, M.; Achasov, M.; Albayrak, O.; Ambrose, D.; An, F.; An, Q.; Bai, J.; Ferroli, R.; Ban, Y.; Becker, J.; Bennett, J.; Bertani, M.; Bian, J.; Boger, E.; Bondarenko, O.; Boyko, I.; Braun, S.; Briere, R.; Bytev, V.; Cai, H.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G.; Cetin, S.; Chang, J.; Chelkov, G.; Chen, G.; Chen, H.; Chen, J.; Chen, M.; Chen, S.; Chen, X.; Chen, Y.; Cheng, H.; Chu, X.; Chu, Y.; Cronin-Hennessy, D.; Dai, H.; Dai, J.; Dedovich, D.; Deng, Z.; Denig, A.; Denysenko, I.; Destefanis, M.; Ding, W.; Ding, Y.; Dong, L.; Dong, M.; Du, S.; Fang, J.; Fang, S.; Fava, L.; Feng, C.; Friedel, P.; Fu, C.; Fu, J.; Fuks, O.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W.; Gradl, W.; Greco, M.; Gu, M.; Gu, Y.; Guan, Y.; Guo, A.; Guo, L.; Guo, T.; Guo, Y.; Han, Y.; Harris, F.; He, K.; He, M.; He, Z.; Held, T.; Heng, Y.; Hou, Z.; Hu, C.; Hu, H.; Hu, J.; Hu, T.; Huang, G.; Huang, G.; Huang, J.; Huang, L.; Huang, X.; Huang, Y.; Hussain, T.; Ji, C.; Ji, Q.; Ji, Q.; Ji, X.; Ji, X.; Jiang, L.; Jiang, X.; Jiao, J.; Jiao, Z.; Jin, D.; Jin, S.; Jing, F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Kloss, B.; Kopf, B.; Kornicer, M.; Kuehn, W.; Lai, W.; Lange, J.; Lara, M.; Larin, P.; Leyhe, M.; Li, C.; Li, Cheng; Li, Cui; Li, D.; Li, D.; Li, F.; Li, G.; Li, H.; Li, J.; Li, K.; Li, Lei; Li, N.; Li, P.; Li, Q.; Li, W.; Li, W.; Li, X.; Li, X.; Li, X.; Li, X.; Li, Z.; Liang, H.; Liang, Y.; Liang, Y.; Liao, G.; Lin, D.; Liu, B.; Liu, C.; Liu, C.; Liu, F.; Liu, Fang; Liu, Feng; Liu, H.; Liu, H.; Liu, H.; Liu, J.; Liu, K.; Liu, K.; Liu, P.; Liu, Q.; Liu, S.; Liu, X.; Liu, Y.; Liu, Z.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lou, X.; Lu, G.; Lu, H.; Lu, J.; Lu, X.; Lu, Y.; Luo, C.; Luo, M.; Luo, T.; Luo, X.; Lv, M.; Ma, F.; Ma, H.; Ma, Q.; Ma, S.; Ma, T.; Ma, X.; Maas, F.; Maggiora, M.; Malik, Q.; Mao, Y.; Mao, Z.; Messchendorp, J.; Min, J.; Min, T.; Mitchell, R.; Mo, X.; Moeini, H.; Morales, C.; Moriya, K.; Muchnoi, N.; Muramatsu, H.; Nefedov, Y.; Nikolaev, I.; Ning, Z.; Nisar, S.; Olsen, S.; Ouyang, Q.; Pacetti, S.; Park, J.; Pelizaeus, M.; Peng, H.; Peters, K.; Ping, J.; Ping, R.; Poling, R.; Prencipe, E.; Qi, M.; Qian, S.; Qiao, C.; Qin, L.; Qin, X.; Qin, Y.; Qin, Z.; Qiu, J.; Rashid, K.; Redmer, C.; Ripka, M.; Rong, G.; Ruan, X.; Sarantsev, A.; Schumann, S.; Shan, W.; Shao, M.; Shen, C.; Shen, X.; Sheng, H.; Shepherd, M.; Song, W.; Song, X.; Spataro, S.; Spruck, B.; Sun, G.; Sun, J.; Sun, S.; Sun, Y.; Sun, Y.; Sun, Z.; Sun, Z.; Tang, C.; Tang, X.; Tapan, İLHAN; Thorndike, E.; Toth, D.; Ullrich, M.; Uman, I.; Varner, G.; Wang, B.; Wang, D.; Wang, D.; Wang, K.; Wang, L.; Wang, L.; Wang, M.; Wang, P.; Wang, P.; Wang, Q.; Wang, S.; Wang, X.; Wang, X.; Wang, Y.; Wang, Y.; Wang, Y.; Wang, Z.; Wang, Z.; Wang, Z.; Wang, Z.; Wei, D.; Wei, J.; Weidenkaff, P.; Wen, Q.; Wen, S.; Werner, M.; Wiedner, U.; Wu, L.; Wu, N.; Wu, S.; Wu, W.; Wu, Z.; Xia, L.; Xia, Y.; Xiao, Z.; Xie, Y.; Xiu, Q.; Xu, G.; Xu, Q.; Xu, Q.; Xu, X.; Xu, Z.; Xue, Z.; Yan, L.; Yan, W.; Yan, W.; Yan, Y.; Yang, H.; Yang, Y.; Yang, Y.; Yang, Y.; Ye, H.; Ye, M.; Ye, M.; Yu, B.; Yu, C.; Yu, H.; Yu, J.; Yu, S.; Yuan, C.; Yuan, W.; Yuan, Y.; Zafar, A.; Zallo, A.; Zang, S.; Zeng, Y.; Zhang, B.; Zhang, B.; Zhang, C.; Zhang, C.; Zhang, C.; Zhang, D.; Zhang, H.; Zhang, H.; Zhang, J.; Zhang, J.; Zhang, J.; Zhang, J.; Zhang, LiLi; Zhang, S.; Zhang, X.; Zhang, X.; Zhang, Y.; Zhang, Y.; Zhang, Z.; Zhang, Z.; Zhang, Zhenghao; Zhao, G.; Zhao, J.; Zhao, Lei; Zhao, Ling; Zhao, M.; Zhao, Q.; Zhao, S.; Zhao, T.; Zhao, X.; Zhao, Y.; Zhao, Z.; Zhemchugov, A.; Zheng, B.; Zheng, J.; Zheng, Y.; Zhong, B.; Zhou, L.; Zhou, X.; Zhou, X.; Zhou, X.; Zhu, K.; Zhu, K.; Zhu, X.; Zhu, Y.; Zhu, Y.; Zhu, Z.; Zhuang, J.; Zou, B.; Zou, J.

doi:10.1103/physrevlett.111.242001

Observation of a Charged Charmoniumlike Structure Zc (4020) and Search for the Zc (3900) in e+e- → π+ π-hc

Atıf İçin Kopyala

Ablikim M., Achasov M. N., Albayrak O., Ambrose D. J., An F. F., An Q., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.111, sa.24, 2013 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 111 Sayı: 24
Basım Tarihi: 2013
Doi Numarası: 10.1103/physrevlett.111.242001
Dergi Adı: PHYSICAL REVIEW LETTERS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

We study e(+)e(-) -> pi(+) pi(-)h(c) at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies and are found to be of the same order of magnitude as those of e(+)e(-) -> pi(+) pi(-) J/Psi but with a different line shape. In the pi(+/-)h(c) mass spectrum, a distinct structure, referred to as Z(c)(4020) is observed at 4. 02 GeV/c(2). The Z(c)(4020) carries an electric charge and couples to charmonium. A fit to the pi(+/-)h(c) invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9 +/- 0.8 +/- 2.7) MeV/c(2) and a width of (7.9 +/- 2.7 +/- 2.6) MeV for the Z(c)(4020), where the first errors are statistical and the second systematic. The difference between the parameters of this structure and the Z(c) (4025) observed in the D*(D) over bar* final state is within 1.5 sigma, but whether they are the same state needs further investigation. No significant Z(c)(3900) signal is observed, and upper limits on the Z(c)(3900) production cross sections in pi +/- h(c) at center-of-mass energies of 4.23 and 4.26 GeVare set.

Observation of a Charged Charmoniumlike Structure Z<sub>c</sub> (4020) and Search for the Z<sub>c</sub> (3900) in e<SUP>+</SUP>e<SUP>-</SUP> → π<SUP>+</SUP> π<SUP>-</SUP>h<sub>c</sub>

Özet