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  • Measurement of the Absolute...
    Achasov, M. N.; Ahmed, S.; Amoroso, A.; Bai, J. Z.; Bennett, J. V.; Bertani, M.; Cai, X.; Calcaterra, A.; Chai, J.; Chen, P. L.; Cibinetto, G.; Dai, J. P.; Dedovich, D.; Destefanis, M.; Dong, M. Y.; Dou, Z. L.; Fang, X.; Fang, Y.; Farinelli, R.; Felici, G.; Gao, Z.; Harris, F. A.; He, X. Q.; Heng, Y. K.; Hou, Z. L.; Hu, C.; Huang, G. S.; Huang, X. T.; Huang, X. Z.; Ji, Q. P.; Ji, X. B.; Jiao, J. B.; Jin, D. P.; Ke, B. C.; Kopf, B.; Kuemmel, M.; Li, Cheng; Li, G.; Li, J. C.; Li, T.; Li, W. G.; Li, X. L.; Liang, Y. F.; Lin, D. X.; Liu, H. M.; Liu, Huanhuan; Liu, Huihui; Liu, J. Y.; Liu, L. D.; Liu, X.; Liu, Z. A.; Luo, C. L.; Luo, M. X.; Ma, Q. M.; Messchendorp, J. G.; Morales Morales, C.; Nisar, S.; Niu, X. Y.; Pellegrino, J.; Ping, J. L.; Qin, X. S.; Redmer, C. F.; Ripka, M.; Rolo, M.; Rong, G.; Schnier, C.; Schoenning, K.; Shen, C. P.; Sun, G. X.; Sun, X. H.; Tiemens, M.; Wang, D.; Wang, Dan; Wang, K.; Wang, P. L.; Wang, W. P.; Wang, Y.; Wang, Y. D.; Wang, Z.; Wen, S. P.; Wu, Z.; Xia, L.; Xiao, Y. J.; Yang, Y. H.; Yang, Yifan; Yu, B. X.; Yu, C. X.; Zallo, A.; Zhang, J. Y.; Zhang, Yang; Zhang, Yu; Zhao, Ling; Zhao, Q.; Zhemchugov, A.; Zheng, W. J.; Zhong, B.; Zhu, J.; Zhu, K. J.; Zhu, S. H.; Zhu, Y. S.

    Physical review letters, 08/2018, Letnik: 121, Številka: 6
    Journal Article

    Based on an e+e− collision data sample corresponding to an integrated luminosity of 567  pb−1 taken at the center-of-mass energy of s=4.6  GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive decay Λc+→Λ+X to be B(Λc+→Λ+X)=(38.2−2.2+2.8±0.9)% using the double-tag method, where X refers to any possible final state particles. In addition, we search for direct CP violation in the charge asymmetry of this inclusive decay for the first time, and obtain ACP≡B(Λc+→Λ+X)−B(Λ¯c−→Λ¯+X)/B(Λc+→Λ+X)+B(Λ¯c−→Λ¯+X)=(2.1−6.6+7.0±1.6)%, a statistically limited result with no evidence of CP violation.