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Achasov, M. N.; Ahmed, S.; Amoroso, A.; An, F. F.; Bennett, J. V.; Cai, X.; Calcaterra, A.; Chang, J. F.; Chen, H. S.; Dai, H. L.; De Mori, F.; Fava, L.; Felici, G.; Fritsch, M.; Gao, Z.; Goetzen, K.; Gong, L.; Gong, W. X.; Gu, Y. T.; Guo, R. P.; Hao, X. Q.; He, K. L.; Himmelreich, M.; Hu, Y.; Irshad, M.; Ji, X. L.; Jiang, H. L.; Johansson, T.; Kang, X. S.; Kappert, R.; Khoukaz, A.; Koch, L.; Kuessner, M.; Kühn, W.; Li, H. J.; Li, P. L.; Li, W. D.; Liang, Y. T.; Liao, G. R.; Liu, Huanhuan; Liu, K. Y.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Lu, J. D.; Luo, C. L.; Luo, M. X.; Lyu, X. R.; Ma, F. C.; Ma, L. L.; Maldaner, S.; Mangoni, A.; Meng, Z. X.; Muchnoi, N. Yu; Papenbrock, M.; Patteri, P.; Pelizaeus, M.; Qi, M.; Qian, S.; Qin, N.; Qin, X. P.; Qin, Z. H.; Rashid, K. H.; Richter, M.; Schelhaas, Y.; Schoenning, K.; Song, X. Y.; Sowa, C.; Sui, F. F.; Sun, Y. Z.; Wang, P. L.; Wang, W. P.; Wang, X. F.; Wang, Z.; Wu, Z.; Xia, L.; Xiao, Y. J.; Xu, Q. J.; Xu, W.; Yan, F.; Yang, H. X.; Yang, R. X.; Yang, Y. X.; Yang, Z. Q.; Ye, M.; Ye, M. H.; Yu, T.; Yuan, Y.; Zhang, B. X.; Zhang, H. Y.; Zhang, J. L.; Zhang, K.; Zhang, T. J.; Zhang, X. Y.; Zhao, J. W.; Zhao, J. Z.; Zhao, T. C.; Zhao, Y. B.; Zhu, A. N.; Zhu, W. J.
Physical review. D, 02/2020, Letnik: 101, Številka: 3Journal Article
Using a sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector, we perform the first partial wave analysis of ψ(3686)→K+K−η. In addition to the well established states, ϕ(1020), ϕ(1680), and K3*(1780), contributions from X(1750), ρ(2150), ρ3(2250), and K2*(1980) are also observed. The X(1750) state is determined to be a 1−− resonance. The simultaneous observation of the ϕ(1680) and X(1750) indicates that the X(1750), with previous observations in photoproduction, is distinct from the ϕ(1680). The masses, widths, branching fractions of ψ(3686)→K+K−η, and the intermediate resonances are also measured.
