Measurement of the \(e^+e^-\to\pi^+\pi^-J/\psi\) cross section in the vicinity of 3.872 GeV

Measurement of the \(e^+e^-\to\pi^+\pi^-J/\psi\) cross section in the vicinity of 3.872 GeV

We report a measurement of the cross section for the process \(e^+e^-\to\pi^+\pi^-J/\psi\) around the \(X(3872)\) mass in search for the direct formation of \(e^+e^-\to X(3872)\) through the two-photon fusion process. No enhancement of the cross section is observed at the \(X(3872)\) peak and an upp...

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Veröffentlicht in:arXiv.org 2022-09
Hauptverfasser: Ablikim, M, Bai, Y, Bertani, M, Bettoni, D, Bianchi, F, Bloms, J, Bortone, A, Chen, C, Chen, Z J, Cui, J J, Deng, Z Y, Denysenko, I, DeMori, F, Fang, S S, Feng, C Q, Feng, J H, Gao, Y N, Geng, C, Han, T T, Hao, X Q, Herold, C, T Hu, Huang, K X, Huang, L Q, Huang, X T, Irshad, M, Jaeger, S, Jia, Z K, Jiang, Y, Khoukaz, A, Koch, L, Kuessner, M, Kühn, W, Lange, J S, Lavezzi, L, H Li, Li, S Y, XiaoyuLi, Liang, Y F, Liu, D, HuanhuanLiu, LuLiu, Liu, M H, Liu, Z A, Y Lu, Luo, C L, Luo, T, Lyu, Y F, Ma, F C, Ma, M M, Ma, R Q, Ma, X Y, Malik, Q A, Min, T J, Nerling, F, Pan, X, Pathak, A, Plura, S, M Qi, Rashid, K H, Rodin, V, Rong, G, Shi, H C, Shi, q q, Song, J J, Su, P P, Su, Y J, Sun, G X, Sun, H K, Sun, T, Sun, W Y, XSun, Tang, J, Tian, Y, Wang, K, Wang, W H, Wang, W P, Wang, Y H, Wang, Y Q, Wang, Y, Xiao, H, Xie, C, Xu, C J, Xu, Y C, Yang, H J, Yang, S L, Yu, B X, Yuan, X Q, Zhang, A Q, Zhang, B X, Zhang, J W, Zhang, J Y, Zhang, L Q, Zhang, P, Zhang, Y T, Zheng, J P, Zhu, K, Zhu, K J, Zhu, Y C, Zou, J H
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Sprache:eng
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Confidence intervals
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Zusammenfassung:We report a measurement of the cross section for the process \(e^+e^-\to\pi^+\pi^-J/\psi\) around the \(X(3872)\) mass in search for the direct formation of \(e^+e^-\to X(3872)\) through the two-photon fusion process. No enhancement of the cross section is observed at the \(X(3872)\) peak and an upper limit on the product of electronic width and branching fraction of \(X(3872)\to\pi^+\pi^-J/\psi\) is determined to be \(\Gamma_{ee}\times\mathcal{B}(X(3872)\to\pi^+\pi^-J/\psi)
ISSN:2331-8422