Observation and Spin-Parity Determination of the X(1835) in J/ψ→γK_{S}^{0}K_{S}^{0}η.
Journal: Physical Review Letters
Published:
Abstract
We report an observation of the process J/ψ→γX(1835)→γK_{S}^{0}K_{S}^{0}η at low K_{S}^{0}K_{S}^{0} mass with a statistical significance larger than 12.9σ using a data sample of 1.31×10^{9} J/ψ events collected with the BESIII detector. In this region of phase space the K_{S}^{0}K_{S}^{0} system is dominantly produced through the f_{0}(980). By performing a partial wave analysis, we determine the spin parity of the X(1835) to be J^{PC}=0^{-+}. The mass and width of the observed X(1835) are 1844±9(stat)_{-25}^{+16}(syst) MeV/c^{2} and 192_{-17}^{+20}(stat)_{-43}^{+62}(syst) MeV, respectively, which are consistent with the results obtained by BESIII in the channel J/ψ→γπ^{+}π^{-}η^{'}.
Authors
M Ablikim, M Achasov, X Ai, O Albayrak, M Albrecht, D Ambrose, A Amoroso, F An, Q An, J Bai, R Ferroli, Y Ban, D Bennett, J Bennett, M Bertani, D Bettoni, J Bian, F Bianchi, E Boger, I Boyko, R Briere, H Cai, X Cai, O Cakir, A Calcaterra, G Cao, S Cetin, J Chang, G Chelkov, G Chen, H Chen, H Chen, J Chen, M Chen, S Chen, X Chen, X Chen, Y Chen, H Cheng, X Chu, G Cibinetto, H Dai, J Dai, A Dbeyssi, D Dedovich, Z Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, L Dong, M Dong, S Du, P Duan, E Eren, J Fan, J Fang, S Fang, X Fang, Y Fang, L Fava, F Feldbauer, G Felici, C Feng, E Fioravanti, M Fritsch, C Fu, Q Gao, X Gao, Y Gao, Z Gao, I Garzia, C Geng, K Goetzen, W Gong, W Gradl, M Greco, M Gu, Y Gu, Y Guan, A Guo, L Guo, Y Guo, Y Guo, Z Haddadi, A Hafner, S Han, Y Han, X Hao, F Harris, K He, Z He, T Held, Y Heng, Z Hou, C Hu, H Hu, J Hu, T Hu, Y Hu, G Huang, G Huang, H Huang, J Huang, X Huang, Y Huang, T Hussain, Q Ji, X Ji, X Ji, L Jiang, L Jiang, X Jiang, X Jiang, J Jiao, Z Jiao, D Jin, S Jin, T Johansson, A Julin, N Kalantar Nayestanaki, X Kang, X Kang, M Kavatsyuk, B Ke, P Kiese, R Kliemt, B Kloss, O Kolcu, B Kopf, M Kornicer, W Kühn, A Kupsc, J Lange, M Lara, P Larin, C Leng, C Li, C Li, Cheng Li, D Li, F Li, G Li, H Li, J Li, Jin Li, K Li, K Li, Lei Li, P Li, T Li, W Li, W Li, X Li, X Li, X Li, X Li, Z Li, H Liang, Y Liang, Y Liang, G Liao, D Lin, B Liu, C Liu, F Liu, Fang Liu, Feng Liu, H Liu, H Liu, H Liu, J Liu, J Liu, J Liu, K Liu, K Liu, K Liu, L Liu, P Liu, Q Liu, S Liu, X Liu, Y Liu, Z Liu, Zhiqiang Liu, Zhiqing Liu, H Loehner, X Lou, H Lu, J Lu, R Lu, Y Lu, C Luo, M Luo, T Luo, X Luo, M Lv, X Lyu, F Ma, H Ma, L Ma, Q Ma, T Ma, X Ma, X Ma, F Maas, M Maggiora, Y Mao, Z Mao, S Marcello, J Messchendorp, J Min, T Min, R Mitchell, X Mo, Y Mo, C Morales, K Moriya, N Muchnoi, H Muramatsu, Y Nefedov, F Nerling, I Nikolaev, Z Ning, S Nisar, S Niu, X Niu, S Olsen, Q Ouyang, S Pacetti, P Patteri, M Pelizaeus, H Peng, K Peters, J Pettersson, J Ping, R Ping, R Poling, V Prasad, Y Pu, M Qi, S Qian, C Qiao, L Qin, N Qin, X Qin, Y Qin, Z Qin, J Qiu, K Rashid, C Redmer, H Ren, M Ripka, G Rong, Ch Rosner, X Ruan, V Santoro, A Sarantsev, M Savrié, K Schoenning, S Schumann, W Shan, M Shao, C Shen, P Shen, X Shen, H Sheng, W Song, X Song, S Sosio, S Spataro, G Sun, J Sun, S Sun, Y Sun, Y Sun, Z Sun, Z Sun, C Tang, X Tang, I Tapan, E Thorndike, M Tiemens, M Ullrich, I Uman, G Varner, B Wang, B Wang, D Wang, K Wang, L Wang, M Wang, P Wang, S Wang, W Wang, X Wang, Y Wang, Y Wang, Y Wang, Z Wang, Z Wang, Z Wang, T Weber, D Wei, J Wei, P Weidenkaff, S Wen, U Wiedner, M Wolke, L Wu, Z Wu, L Xia, Y Xia, D Xiao, Z Xiao, Y Xie, Q Xiu, G Xu, L Xu, Q Xu, Q Xu, X Xu, L Yan, W Yan, W Yan, Y Yan, H Yang, H Yang, L Yang, Y Yang, H Ye, M Ye, M Ye, J Yin, B Yu, C Yu, H Yu, J Yu, C Yuan, W Yuan, Y Yuan, A Yuncu, A Zafar, A Zallo, Y Zeng, B Zhang, B Zhang, C Zhang, C Zhang, D Zhang, H Zhang, H 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, Yu Zhang, Z Zhang, Z Zhang, Z Zhang, G Zhao, J Zhao, J Zhao, J Zhao, Lei Zhao, Ling Zhao, M Zhao, Q Zhao, S Zhao, T Zhao, Y Zhao, Z Zhao, A Zhemchugov, B Zheng, J Zheng, W Zheng, Y Zheng, B Zhong, L Zhou, Li Zhou, X Zhou, X Zhou, X Zhou, X Zhou, K Zhu, S Zhu, X Zhu, Y Zhu, Y Zhu, Z Zhu, J Zhuang, L Zotti, B Zou, J Zou