Search for hadronic transition $χ_{cJ} → η_cπ^+π^-$ and observation of $χ_{cJ} → K\overline{K}πππ$

M Ablikim,S S Fang,Q G Wen,M G Zhao,F C Ma,H X Yang,Z P Zhang,Qun Ouyang,W Lai,H L Ma,Chengsong Zhu,B Q Wang,C P Shen,T Hussain,Lijun Yan,T Held, V Bytev,A Q Guo, B J Liu, Q J Xu, H P Peng,F H Liu, M X Luo,J W Zhao,J M Bian, C Z Yuan,X Y Ma,S P Wen,J C Li,Y Z Sun,R G Ping,W X Gong,C J Tang,Z H An,Z Y He, D Croninhennessy,Qi Liu, Haihua Xu,X W Zhu,Shan Ping Yu, Q An, M Qi,M Pelizaeus,Quan Ji,A G Denig,M H Gu,J G Messchendorp, Q A Malik,Y P Lu,Ling Zhao,J S Lange,Jianwen Fang,Kai Li,D V Dedovich, H Loehner,G R Lu, H S Chen, S L Li,S J Zhao,G R Liao,J Z Zhang,M Maggiora,Yousi Ma,M Destefanis,W D Li, J S Huang,C C Zhang, X L Luo,A Zallo,C X Yu, S Qian,Z A Zhu,J F Qiu, M Greco, K Y Liu, Z R Xu, L Y Dong, R A Briere,F F Jing, S X Wu, C D Fu,Tao Luo,A Zhemchugov,C S Ji,O Cakir,Zaisheng Wu,Z J Sun,K L He,R Poling,K Goetzen,J S Yu,S L Olsen,H M Hu,J P Zheng,K Peters, J P Liu, B S Zou,I Tapan,Y B Zhao,Min Shao,Y Q Wang,N Yu Muchnoi,Z A Liu,J Min,X H Zhao,J Schulze, X R Zhou,Haicheng Ye,Y X Yang,L S Wang,Shu Hua Zhang, W Gradl,Z J Xiao,Yang Gao,Y G Xie,D Toth,C F Qiao, O Bondarenko, Z Y Deng, S A Cetin, G Varner,Fuzhong Xue,T J Min,I B Nikolaev,D H Zhang, Meiniang Wang,Zhenyi Xue,Guoqiang Chen,A V Sarantsev,S Pacetti,Philip L Liu,L B Guo,Y J Mao,Quansheng Zhao,D M Li,W B Yan,J H Zou, I Boyko, Y B Liu, E Prencipe,S X Du, Lei Li,H L Dai,U Wiedner,C Q Feng, X S Jiang,M Y Dong,M Lv, G M Huang,H H Zhang,X H Mo,W Kuehn,H S Zhao,X S Qin, H P Cheng,J F Hu,X D Ruan,Y T Gu, L G Xia, Y Qin,Y P Guo,Q M Ma, J W Park,Q J Li,G F Cao,H Muramatsu, X Y Shen,Guo Li, J C Chen,T Ma, B Spruck,H B Li,S Spataro, S J Chen,C X Liu,M Ullrich,R B Ferroli,X L Wang, Y Ban, E Boger,J G Lu,A A Zafar,Xiaoying Tang,S H Zhu,Y Nefedov,Z P Mao,Yanbo Zeng, F E Maas,M N Achasov,X B Ji, Jorg D Becker,Bing Zheng,B Zhong,Y P Chu, B D Schaefer,E H Thorndike,C H Li, Y H Yan,Fuxin Li, L Fava,X R Li,J F Chang, P Weidenkaff, Y S Zhang,J B Jiao,Z G Zhao,M Kavatsyuk,Y T Liang,H M Liu,M L Chen,B X Zhang, Y H Guan,J P Dai, M R Shepherd, H J Lu,Z G Wang,L L Jiang,Y B Chen,F A Harris, T Hu,X T Liao,X P Xu, Xiu Juan Zhang,G M Xu,M Werner,X R Lu, Huaguo Liang,Y H Zheng,X T Huang, Zhen Bao Li,K Wang,Zongxia Jiao, X Y Song, Wentien Wu,G Zhao,X H Liu,P L Wang,J F Sun,K X Zhao,L H Wu,D H Wei,Mang He,Jing Zhuang, J L Ping, C Motzko, C Geng, R E Mitchell, Y M Zhu, S Jin,B X Yu,G Rong,C Morales Morales, S B Liu,S S Sun, Z H Qin,J L Fu,Yuan Yuan, M Bertani, Q L Xiu, K J Zhu,I Denysenko,H Y Sheng, Y Ding, Li Zhou, Z L Hou, J Z Bai, G A Chelkov,C L Ma, Z Ning,M H Ye,D Ambrose, F Feldbauer,W M Ding, Xuehui Cai,A Calcaterra,Y P Huang, K H Rashid, F F An, Charles F Nicholson,Qi Jie Wang,Q W Lu,Y K Heng,S G Wang,D P Jin,D H Sun, C L Luo,G X Sun,N Kalantarnayestanaki,J Zhong,Y L Han,T C Zhao,Nianqiang Wu,S Ma

PHYSICAL REVIEW D（2013）

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摘要

Hadronic transitions of chi(cJ) -> eta(c)pi(+)pi(-) (J = 0, 1, 2) are searched for using a sample of 1.06 x 10(8) psi(3686) events collected with the BESIII detector at the BEPCII storage ring. The eta(c) is reconstructed with (KSK +/-)-K-0 pi(-/+) and K+K-pi(0) final states. No signals are observed in any of the three chi(cJ) states in either eta(c) decay mode. At the 90% confidence level, the upper limits are determined to be B(chi(c0) -> eta(c)pi(+)pi(-)) < 0.07%, B(chi(c1) -> eta(c)pi(+)pi(-)) < 0.32%, and B(chi(c2) -> eta(c)pi(+)pi(-)) < 0.54%. The upper limit of B(chi(c1) -> eta(c)pi(+)pi(-)) is lower than the existing theoretical prediction by almost an order of magnitude. The branching fractions of chi(cJ) -> (KSK +/-)-K-0 pi(-/+)pi(+)pi(-), K+K-pi(+)pi(-)pi(0), omega K+K-, and phi pi(+)pi(-)pi(0) (J = 0, 1, 2) are measured for the first time. DOI: 10.1103/PhysRevD.87.012002

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