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The loop effects on the chargino decays \(\tilde{\chi }_1^\pm \rightarrow \tilde{\chi }_1^0 f f^\prime \) in the MSSM

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  • High-Energy Physics
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Chinese Science Bulletin

Abstract

The lighter chargino three body decays \(\tilde{\chi }_1^\pm \rightarrow \tilde{\chi }_1^0 f f^\prime \) via the \(W^\pm \) boson and the charged Higgs boson \(H^\pm \) were studied in the R-parity conserved Minimal Supersymmetric Standard Model (MSSM). We treat \(\tilde{\chi }_1^\pm \) decays as production and decay of \(W^\pm \) and \(H^\pm \): i.e., \(\tilde{\chi }_1^\pm \rightarrow \tilde{\chi }_1^0 W^\pm (H^\pm ) \rightarrow \tilde{\chi }_1^0 f f^\prime \). Both higgsino-like and wino-like \(\tilde{\chi }_1^\pm \) decays were well investigated. These decays are calculated at 1-loop level and the loop corrections are found to be less than three percent. The signal of the charged Higgs \(H^\pm \) production from \(\tilde{\chi }_1^\pm \) decays is discussed. It will offer important information about the chargino and neutralino sector, as well as the charged Higgs sector in the MSSM.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (11147023, 11305044 and 11235005) and Zhejiang Provincial Natural Science Foundation (LQ12A05003).

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Authors and Affiliations

  1. Department of Physics, Hangzhou Normal University, Hangzhou, 310036, China

    Qingjun Xu

  2. Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, 210023, China

    Shusheng Xu, Zhenjun Xiao & Ligang Jin

  3. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China

    Qingjun Xu

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  1. Qingjun Xu
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  2. Shusheng Xu
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  3. Zhenjun Xiao
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  4. Ligang Jin
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Correspondence to Qingjun Xu or Zhenjun Xiao.

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Xu, Q., Xu, S., Xiao, Z. et al. The loop effects on the chargino decays \(\tilde{\chi }_1^\pm \rightarrow \tilde{\chi }_1^0 f f^\prime \) in the MSSM . Chin. Sci. Bull. 59, 1968–1977 (2014). https://doi.org/10.1007/s11434-014-0289-3

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