Charmed baryon decay asymmetry in e+e- annihilation

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Dan Wang, Rong-Gang Ping, Lei Li, Xiao-Rui Lyu and Yang-Heng Zheng. Charmed baryon decay asymmetry in e+e- annihilation[J]. Chinese Physics C, 2017, 41(2): 023106. doi: 10.1088/1674-1137/41/2/023106
Dan Wang, Rong-Gang Ping, Lei Li, Xiao-Rui Lyu and Yang-Heng Zheng. Charmed baryon decay asymmetry in e+e- annihilation[J]. Chinese Physics C, 2017, 41(2): 023106.  doi: 10.1088/1674-1137/41/2/023106 shu
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Received: 2016-09-12
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    Supported by National Natural Science Foundation of China (11375205, 11175146, 11275266, 11235011, 11425524, 11505010, 11565006), Beijing Municipal Government Foundation (KM201610017009, 2015000020124G064), Youth Innovation Promotion Association of CAS.

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Charmed baryon decay asymmetry in e+e- annihilation

    Corresponding author: Rong-Gang Ping,
    Corresponding author: Lei Li,
    Corresponding author: Xiao-Rui Lyu,
    Corresponding author: Yang-Heng Zheng,
  • 1.  University of Chinese Academy of Science, Beijing 100049, China
  • 2.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 3.  Beijing Institute of Petrochemical Technology, Beijing 102617, China
  • 4. University of Chinese Academy of Science, Beijing 100049, China
  • 5. CAS Key Laboratory of Vacuum Physics, UCAS, Beijing 100049, China
Fund Project:  Supported by National Natural Science Foundation of China (11375205, 11175146, 11275266, 11235011, 11425524, 11505010, 11565006), Beijing Municipal Government Foundation (KM201610017009, 2015000020124G064), Youth Innovation Promotion Association of CAS.

Abstract: We propose to measure the decay asymmetry parameters in the hadronic weak decays of singly charmed baryons, such as Λc+→Λπ+0π+,pK0, Ξc0→Ξ-π+ and Ωc0→Ω-π+. The joint angular formulae for these processes are presented, and are used to extract the asymmetry parameters in e+e- annihilation data. Base on the current Λc+ data set collected at BESIII, we estimate the experimental sensitivities to measure the parameters αΛπ+ for Λc+→Λπ+, αΣ+π0 for Λc+→Σ+π0 and αΣ0π+ for Λc+→Σ0π+.

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