Measurement of χ cj decaying into pn̄π - and pn̄π -π0

Ablikim, Achasov, Albayrak, Ambrose, An, Bai, Ban, Becker, Bennett, Bertani, Bian, Boger, Bondarenko, Boyko, Briere, Bytev, Cai, Cakir, Calcaterra, Cao, Cetin, Chang, Chelkov, Chen, Cheng, Chu, Cronin-Hennessy, Dai, Dedovich, Deng, Denig, Denysenko, Destefanis, Ding, Dong, Du, Fang, Fava, Feldbauer, Feng, Ferroli, Fu, Gao, Geng, Goetzen, Gong, Gradl, Greco, Gu, Guan, Guo, Han, Harris, He, Held, Heng, Hou, Hu, Huang, Hussain, Ji, Jiang, Jiao, Jin, Jing, Kalantar-Nayestanaki, Kavatsyuk, Kuehn, Lai, Lange, Li, Liang, Liao, Liu, Loehner, Lu, Luo, Lv, Ma, Maas, Maggiora, Malik, Mao, Messchendorp, Min, Mitchell, Mo, Morales Morales, Motzko, Muchnoi, Muramatsu, Nefedov, Nicholson, Nikolaev, Ning, Olsen, Ouyang, Pacetti, Park, Pelizaeus, Peng, Peters, Ping, Poling, Prencipe, Qi, Qian, Qiao, Qin, Qiu, Rashid, Rong, Ruan, Sarantsev, Schaefer, Schulze, Shao, Shen, Sheng, Shepherd, Song, Spataro, Spruck, Sun, Tang, Tapan, Thorndike, Toth, Ullrich, Varner, Wang, Wei, Weidenkaff, Wen, Werner, Wiedner, Wu, Xia, Xiao, Xie, Xiu, Xu, Xue, Yan, Yang, Ye, Yu, Yuan, Zafar, Zallo, Zeng, Zhang, Zhao, Zhemchugov, Zheng, Zhong, Zhou, Zhu, Zhuang, Zou

PHYSICAL REVIEW D（2012）

Cited 12|Views80

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Abstract

Using a data sample of 1.06 x 10(8) psi' events collected with the BESIII detector in 2009, the branching fractions of chi(cJ) -> p (n) over bar pi(-) and chi(cJ) -> p (n) over bar pi(-)pi(0) (J = 0, 1, 2) are measured. (Throughout the text, inclusion of charge conjugate modes is implied if not stated otherwise.) The results for chi(c0) -> p (n) over bar pi(-) and chi(c2) -> p (n) over bar pi(-) are consistent with, but much more precise than, those of previous measurements. The decays of chi(c1) -> p (n) over bar pi(-) and chi(cJ) -> p (n) over bar pi(-)pi(0) are observed for the first time.

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