Measurement of the branching fraction for ψ(3770)→γχc0

Measurement of the branching fraction for ψ(3770)→γχc0

By analyzing a data set of 2.92 fb−1 of e+e− collision data taken at s=3.773 GeV and 106.41×106ψ(3686) decays taken at s=3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ(3770)→γχc0 to be B(ψ(3770)→γχc0)=(6.88±0.28±0.67)×10...

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Veröffentlicht in:Physics letters. B 2016-02, Vol.753 (C), p.103-109
Hauptverfasser: Ambrose, D.J., Ban, Y., Cheng, H.P., Dai, H.L., Ding, Y., Dong, C., Du, S.X., Duan, P.F., Fan, J.Z., Fang, X., Feng, C.Q., Gao, X.L., Garzia, I., Goetzen, K., Gradl, W., Greco, M., Gu, M.H., Guo, Y.P., Harris, F.A., Hu, J.F., Hu, Y., Huang, G.S., Huang, J.S., Huang, X.T., Huang, Y., Ji, Q.P., Ji, X.B., Jiang, X.Y., Jin, D.P., Kalantar-Nayestanaki, N., Kloss, B., Kuehn, W., Li, Lei, Li, X.L., Li, X.Q., Liang, Y.F., Lin, D.X., Liu, C.X., Liu, F.H., Liu, K., Liu, X., Lu, J.G., Ma, X.N., Maggiora, M., Mao, Z.P., Marcello, S., Mo, X.H., Mo, Y.J., Nikolaev, I.B., Niu, X.Y., Olsen, S.L., Patteri, P., Pelizaeus, M., Qi, M., Qin, L.Q., Qin, N., Qin, X.S., Qiu, J.F., Rashid, K.H., Schoenning, K., Shan, W., Shen, C.P., Song, W.M., Sun, G.X., Sun, J.F., Sun, Y.J., Sun, Z.T., Tang, C.J., Varner, G.S., Wang, X.F., Wang, Z.G., Weber, T., Weidenkaff, P., Xia, L., Xiu, Q.L., Yan, W.B., Yan, Y.H., Yang, L., Ye, M.H., Yu, C.X., Yuan, C.Z., Yuan, Y., Zafar, A.A., Zhang, B.X., Zhang, B.Y., Zhang, K., Zhang, L., Zhang, Y., Zhang, Y.T., Zhang, Z.H., Zhao, Q., Zhao, Y.B., Zhao, Z.G., Zheng, B., Zheng, W.J., Zhou, X.K., Zhu, K., Zhu, K.J., Zhu, Y.S., Zotti, L.
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Sprache:eng
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Zusammenfassung:By analyzing a data set of 2.92 fb−1 of e+e− collision data taken at s=3.773 GeV and 106.41×106ψ(3686) decays taken at s=3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ(3770)→γχc0 to be B(ψ(3770)→γχc0)=(6.88±0.28±0.67)×10−3 and Γ[ψ(3770)→γχc0]=(187±8±19) keV, respectively. These are the most precise measurements to date.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2015.11.074