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Ablikim, M; Achasov, M N; Ai, X C; Albayrak, O; An, F F; An, Q; Bennett, J V; Bianchi, F; Cai, X; Cakir, O; Chelkov, G; Chen, G; Chen, H S; Chen, X; Chen, X R; Chu, X K; Cibinetto, G; Dedovich, D; Dong, C; Duan, P F; Felici, G; Feng, C Q; Fioravanti, E; Fu, C D; Gao, Y; Guo, Y P; Heng, Y K; Hu, T; Huang, Y; Hussain, T; Ji, Q P; Jiang, X Y; Jiao, J B; Johansson, T; Kalantar-Nayestanaki, N; Kang, X S; Kupsc, A; Lara, M; Li, G; Li, Lei; Li, Q Y; Li, W D; Li, W G; Liu, C X; Liu, H H; Liu, H M; Liu, J; Liu, X; Lu, H J; Lu, Y; Luo, M X; Luo, X L; Ma, X N; Mitchell, R E; Muchnoi, N Yu; Nerling, F; Ning, Z; Niu, S L; Niu, X Y; Pacetti, S; Pan, Y; Qi, M; Ripka, M; Shen, X Y; Song, X Y; Tang, C J; Varner, G S; Wang, D Y; Wang, K; Wang, P L; Wang, Z; Weidenkaff, P; Xia, Y; Xiao, D; Xiao, Z J; Xiu, Q L; Xu, Q J; Yang, H J; Ye, M H; Yin, J H; Yu, B X; Yuan, C Z; Yuan, W L; Zeng, Y; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, Y; Zhang, Y T; Zhao, G; Zhao, S J; Zhao, T C; Zhao, Y B; Zheng, B; Zhou, L; Zhou, X Y; Zhu, K; Zhu, Y S; Zhu, Z A; Zou, B S
Physical review letters, 02/2016, Letnik: 116, Številka: 5Journal Article
We report the first measurement of absolute hadronic branching fractions of Λ_{c}^{+} baryon at the Λ_{c}^{+}Λover ¯_{c}^{-} production threshold, in the 30 years since the Λ_{c}^{+} discovery. In total, 12 Cabibbo-favored Λ_{c}^{+} hadronic decay modes are analyzed with a double-tag technique, based on a sample of 567 pb^{-1} of e^{+}e^{-} collisions at sqrts=4.599 GeV recorded with the BESIII detector. A global least-squares fitter is utilized to improve the measured precision. Among the measurements for twelve Λ_{c}^{+} decay modes, the branching fraction for Λ_{c}^{+}→pK^{-}π^{+} is determined to be (5.84±0.27±0.23)%, where the first uncertainty is statistical and the second is systematic. In addition, the measurements of the branching fractions of the other 11 Cabibbo-favored hadronic decay modes are significantly improved.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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