Observation of η'→π+ π π+ π- and η'→π+π- π0 π0.

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

Physical review letters（2014）

引用 22|浏览50

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摘要

Using a sample of 1.3 × 10(9) J/ψ events collected with the BESIII detector, we report the first observation of η(')→π(+)π(-)π(+)π(-) and η(')→π(+)π(-)π(0)π(0). The measured branching fractions are B(η(')→π(+)π(-)π(+)π(-)) = [8.53 ± 0.69(stat.) ± 0.64(syst.)]×10(-5) and B(η(')→π(+)π(-)π(0) π(0)) = [1.82 ± 0.35(stat.) ± 0.18(syst.)] × 10(-4), which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.

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