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 upper limit...

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Hauptverfasser: Ablikim, M, Achasov, M. N, An, M. R, Bai, Y, Bertani, M, Bettoni, D, Bianchi, F, Bloms, J, Bortone, A, Briere, R. A, Cao, G. F, Cetin, S. A, Chen, C, Chen, S. M, Chen, X. R, Cheng, W. S, Choi, S. K, Denysenko, I, DeMori, F, Feng, C. Q, Ge, P. T, Geng, C, He, K. L, Herold, C, NHüsken, Jiang, X. S, Jiang, Y, Jiao, J. B, Khoukaz, A, Kolcu, O. B, Kuessner, M, Lavezzi, L, Lenz, T, Li, C, Li, H. B, Li, J. S, KeLi, Li, M. H, Li, S. Y, FengLiu, Liu, G. M, HuanhuanLiu, Liu, Q, Liu, Z. A, Ma, H. L, Maas, F. E, Maldaner, S, Malik, Q. A, Mao, Z. P, Mezzadri, G, Olsen, S. L, Pacetti, S, Pelizaeus, M, Peters, K, Pettersson, J, Ping, J. L, Qian, S, Qiao, C. F, Qin, X. P, Rosner, Ch, Shi, H. C, Sun, H, XSun, Tao, Q. T, Wang, B, Wang, B. L, Wang, C. W, Wang, D. Y, Wang, L. L, MengWang, Wang, T. J, Wang, W. P, Wang, Y. H, Wang, Y. Q, Wang, Z. Y, Wiedner, U, Wilkinson, G, Wu, X, Xiang, T, Xie, Y. H, Xie, Z. P, Yang, H. L, Yang, L, Ye, M, Yin, J. H, Yu, C. X, Yu, T, Yuan, C. Z, Yuan, X. Q, Zafar, A. A, Zeng, F. R, Zhang, H, Zhang, J. Q, ShuihanZhang, ShuleiZhang, Zhao, J. Y, Zhao, Y. B, Zhou, L. P, Zhu, K. J, Zhu, S. H
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Sprache:eng
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Physics - High Energy Physics - Experiment
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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)
DOI:10.48550/arxiv.2209.12007