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  • Measurements of absolute br...
    Ahmed, S.; Albrecht, M.; Bakina, O.; Boyko, I.; Briere, R.A.; Cao, G.F.; Chang, J.F.; Chen, H.S.; Chen, P.L.; Chen, S.J.; Dedovich, D.; Denysenko, I.; Destefanis, M.; De Mori, F.; Dong, C.; Dong, J.; Dong, M.Y.; Du, S.X.; Fang, J.; Feldbauer, F.; Gao, Y.; Garzia, I.; Guo, A.Q.; Hou, Z.L.; Hu, T.; Huang, G.S.; Huang, X.Z.; Ji, Q.P.; Ji, X.B.; Jiang, X.S.; Jiang, X.Y.; Jin, D.P.; Jin, S.; Kalantar-Nayestanaki, N.; Kuessner, M.; Kuhlmann, M.; Kühn, W.; Leithoff, H.; Li, H.J.; Li, Kang; Li, Ke; Liang, Y.F.; Libby, J.; Liu, B.J.; Liu, Huihui; Liu, K.; Long, Y.F.; Luo, M.X.; Luo, X.L.; Ma, F.C.; Ma, X.Y.; Ma, Y.M.; Meng, Z.X.; Mustafa, A.; Olsen, S.L.; Pan, Y.; Peng, H.P.; Prasad, V.; Qi, H.R.; Rong, G.; Schnier, C.; Shen, P.X.; Song, W.M.; Sun, Y.Z.; Tang, C.J.; Varner, G.S.; Wang, B.; Wang, L.L.; Wang, Meng; Wang, Y.D.; Wang, Y.Q.; Wang, Zongyuan; Wu, L.H.; Xia, L.; Xiao, D.; Yan, W.B.; Yan, Y.H.; Yang, L.; Ye, M.; Ye, M.H.; Yin, J.H.; You, Z.Y.; Yu, J.S.; Yuan, Y.; Zhang, H.Y.; Zhang, J.; Zhang, J.L.; Zhang, J.Q.; Zhang, J.Z.; Zhang, Y.T.; Zhao, J.Z.; Zhao, M.G.; Zhao, T.C.; Zhemchugov, A.; Zheng, Y.H.; Zhou, X.; Zhou, X.Y.; Zhu, Z.A.; Zou, B.S.; Zou, J.H.

    Physics letters. B, 08/2018, Letnik: 783
    Journal Article

    We report the first measurements of absolute branching fractions for the W-exchange-only processes Λc+→Ξ0K+ and Λc+→Ξ(1530)0K+ with the double-tag technique, by analyzing an e+e− collision data sample, that corresponds to an integrated luminosity of 567 pb−1 collected at a center-of-mass energy of 4.6 GeV by the BESIII detector. The branching fractions are measured to be B(Λc+→Ξ0K+)=(5.90±0.86±0.39)×10−3 and B(Λc+→Ξ(1530)0K+)=(5.02±0.99±0.31)×10−3, where the first uncertainties are statistical and the second systematic. Our results are more precise than the previous relative measurements.