Search for the rare semi-leptonic decay J/ψ → D−e+νe + c.c

A bstract Using 10 . 1 × 10 9 J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy s = 3 . 097 GeV and collected with the BESIII detector, we present a search for the rare semi-leptonic decay J/ψ → D − e + ν e + c.c. No excess of signal above background i...

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Published in:The journal of high energy physics 2021-06, Vol.2021 (6), p.1-15, Article 157
Main Authors: Bai, X. H., Ban, Y., Boyko, I., Cai, X., Chelkov, G., Chen, S. J., Dedovich, D., Denig, A., Ding, Y., Fang, J., Fang, Y., Felici, G., Gao, Y., Gao, Y. G., Gong, L., Gu, M. H., Gu, Y. T., Hüsken, N., Hou, G. Y., Hu, Y., Ikegami Andersson, W., Irshad, M., Janchiv, S., Ji, X. L., Kang, X. S., Kiuchi, R., Larin, P., Lavania, A., Lei, Z. H., Leithoff, H., Li, C., Li, G., Li, H. B., Li, H. J., Li, J. S., Li, L., Li, P. R., Li, X. L., Li, Z. Y., Liu, F., Liu, K. Y., Liu, Z. Q., Lou, X. C., Luo, P. W., Ma, Q. M., Maas, F. E., Mitchell, R. E., Muchnoi, N. Yu, Muramatsu, H., Nefedov, Y., Pan, X., Pan, Y., Peng, H. P., Qian, W. B., Qiao, C. F., Rolo, M., Shan, D. C., Shao, M., Shen, H. F., Shen, X. Y., Shi, H. C., Sui, F. F., Sun, W. Y., Sun, Y. J., Sun, Y. Z., Tang, J., Teng, J. X., Thoren, V., Uman, I., Wang, M., Wang, M. Z., Wang, Y. Q., Wang, Z., Wiedner, U., Wollenberg, L., Wu, L. J., Xie, X. H., Xie, Y. G., Xu, G. F., Xu, W., Yan, W. C., Yang, H. J., Yang, Y., Ye, M., Yu, C. X., Yuan, Y., Yuncu, A., Zeng, X., Zhang, H. H., Zhang, L. Q., Zhang, L., Zhang, Y., Zhao, J. Y., Zhao, M. G., Zhao, Z. G., Zhou, L. P., Zhou, Q., Zhou, X. K., Zhu, A. N., Zhu, W. J.
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Language:eng
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Summary:A bstract Using 10 . 1 × 10 9 J/ψ events produced by the Beijing Electron Positron Collider (BEPCII) at a center-of-mass energy s = 3 . 097 GeV and collected with the BESIII detector, we present a search for the rare semi-leptonic decay J/ψ → D − e + ν e + c.c. No excess of signal above background is observed, and an upper limit on the branching fraction ℬ( J / ψ  →  D − e + ν e  +  c . c .) 
ISSN:1029-8479
1029-8479