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  • Measurement of \(e^+e^-\to pK^-\bar{\Lambda}+c.c.\) cross sections between 4.009 GeV and 4.951 GeV
    Ablikim, M; Berger, N; Bloms, J; Chang, J F; Chen, S J; Coen, S C; Dai, H L; Ding, B; Ding, Y; Dong, L Y; Dong, X; Fang, W X; Fava, L; Garzia, I; Gong, L; Gramigna, S; Gu, M H; Guan, C Y; Han, W Y; Hao, X Q; Heinsius, F H H; Heinz, C H; Hou, Y R; Jaeger, S; Jiang, S S; Jiang, T J; Jiang, Y; Kang, X L; Kavatsyuk, M; Kühn, W; Lenz, T; H Li; Li, K L; Li, Lei; Li, X H; Li, Z X; Liang, C; Limphirat, A; Lin, D X; Liu, Feng; Liu, H M; Liu, J Y; Liu, Ke; Liu, Y; Lu, Y P; Luo, M X; Ma, X Y; Mao, Z P; Nefedov, Y; Nikolaev, I B; Pacetti, S; Peters, K; Qiao, C F; Redmer, C F; Rosner, Ch; Salone, N; Shi, B A; Sun, H; Sun, S S; Sun, Z T; Tang, Y A; Tat, M; Wang, Bo; Wang, J P; Wang, K; Wang, W P; Wang, Y F; Wang, Y H; Wei, D; Wei, D H; Weidner, F; Wilkinson, G; Wu, L H; Z Wu; Xia, L; Xu, C F; Xu, Z S; Yan, L; Yan, X Q; Yang, H J; Yang, Y; Ye, M H; Yuan, Z Y; Yue, C X; Zafar, A A; Zhang, B L; Zhang, G Y; Zhang, H H; Zhang, J J; Zhang, Jianyu; Zhang, X Y; Zhang, Z L; Zhao, G; Zheng, Y H; Zhou, Y Z; Zhu, K; Zhu, K J; Zhu, W J; Zhu, Y C; Zhu, Z A

    arXiv.org, 07/2023
    Paper

    Using \(e^+e^-\) collision datasets corresponding to total integrated luminosity of 21.7 fb\(^{-1}\) collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 4.009 GeV to 4.951 GeV, the energy-dependent cross sections of \(e^+e^-\to pK^-\bar{\Lambda}+c.c.\) are measured for the first time. By fitting these energy-dependent cross sections, we search for the excited \(\psi\) states \(\psi(4160)\) and \(\psi(4415)\), and the vector charmonium-like states \(\psi(4230)\), \(\psi(4360)\), and \(\psi(4660)\). No evidence for these is observed and the upper limits on the branching fractions of these states decaying into \(pK^-\bar \Lambda+c.c.\) are set at the 90\% confidence level.

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