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  • Measurement of \(e^{+}e^{-}\to\phi\eta'\) cross sections at center-of-mass energies from 3.508 to 4.951 GeV and search for the decay \(\psi(3770)\to\phi\eta'\)
    Ablikim, M; Berger, N; Cetin, S A; Chen, C; Choi, S K; Dai, H L; Denysenko, I; De Mori, F; Ding, Y; Dong, X; Fan, Y H Y; Fang, Y; Feldbauer, F; Fischer, K; Garzia, I; Gersabeck, E M; Gong, L; Guan, C Y; Han, W Y; Hao, X Q; Heinsius, F H H; Heinz, C H; Hou, Y R; N in der Wiesche; Jaeger, S; Jiang, Y; Kalantar-Nayestanaki, N; Kavatsyuk, M; Kuessner, M; Kühn, W; Lenz, T; H Li; Li, K L; Li, Lei; Li, X H; Liang, C; Liang, H; Limphirat, A; Lin, D X; Liu, Feng; Liu, X; Liu, Z Q; Lu, H J; Lu, Z H; Mao, Z P; Mezzadri, G; Miao, H; Mo, X H; Nefedov, Y; Nikolaev, I B; Niu, Y; Ouyang, Q; Ping, J L; Qian, W B; Qiao, C F; Rosner, Ch; Salone, N; Shi, B A; Sun, H; Sun, S S; Sun, Z T; Tang, Y A; Tao, Q T; 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; Xia, L; Xiao, G Y; 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, Xuyan; Zhang, Z L; Zhao, G; Zheng, J P; Zheng, W J; Zhong, B; Zhou, Y Z; Zhu, K; Zhu, K J; Zhu, Y C

    arXiv.org, 09/2023
    Paper

    The cross sections of the \(e^{+}e^{-}\to\phi\eta'\) process at center-of-mass energies from 3.508 to 4.951 GeV are measured with high precision using 26.1 fb\(^{-1}\) data collected with the BESIII detector operating at the BEPCII storage ring. The cross sections are of the order of a few picobarn, and decrease as the center-of-mass energy increases as \(s^{-n/2}\) with \(n=4.35\pm 0.14\). This result is in agreement with the Nambu-Jona-Lasinio model prediction of \(n=3.5\pm 0.9\). In addition, the charmless decay \(\psi(3770)\to\phi\eta'\) is searched for by fitting the measured cross sections, yet no significant signal is observed. The upper limit of \({\cal B}(\psi(3770)\to\phi\eta')\) at the 90\% confidence level is determined to be \(2.3\times 10^{-5}\).

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