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2024年10月30日
Chinese Physics C> 2014, Vol. 38> Issue(6) : 063103 DOI: 10.1088/1674-1137/38/6/063103

Can contributions to Bs→l+l-γ from the magnetic-penguin operator with real photons in the standard model be neglected?

  • 1.

     Institute of Theoretical Physics, Beijing University of Technology, Beijing 100124, China

  • Using the Bs meson wave function extracted from non-leptonic Bs decays, we reevaluate the rare decays Bs→l+l- γ,(l=e,μ) in the Standard Model, including two kinds of contributions from the magnetic-penguin operator with virtual and real photons. We find that contributions to the exclusive decays from the magnetic-penguin operator b→sγ with real photons, which were regarded as negligible in the previous literature, are large and the branching ratios Bs→l+l-γ are enhanced by a factor of almost 2. With the predicted branching ratios of the order of 10-8, it is expected that these radiative dileptonic decays will be detected in LHC-b and B factories in the near future.
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WANG Wen-Yu, XIONG Zhao-Hua and ZHOU Si-Hong. Can contributions to Bs→l+l-γ from the magnetic-penguin operator with real photons in the standard model be neglected?[J]. Chinese Physics C, 2014, 38(6): 063103. doi: 10.1088/1674-1137/38/6/063103
WANG Wen-Yu, XIONG Zhao-Hua and ZHOU Si-Hong. Can contributions to Bs→l+l-γ from the magnetic-penguin operator with real photons in the standard model be neglected?[J]. Chinese Physics C, 2014, 38(6): 063103.  doi: 10.1088/1674-1137/38/6/063103 shu
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Received: 2013-07-17
Revised: 2013-12-07
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Can contributions to Bs→l+l-γ from the magnetic-penguin operator with real photons in the standard model be neglected?

    Corresponding author: WANG Wen-Yu,
    Corresponding author: XIONG Zhao-Hua,
    Corresponding author: ZHOU Si-Hong,
  • 1. Institute of Theoretical Physics, Beijing University of Technology, Beijing 100124, China
  • Received Date: 2013-07-17
  • Accepted Date: 2013-12-07
  • Available Online: 2014-06-05

Abstract: Using the Bs meson wave function extracted from non-leptonic Bs decays, we reevaluate the rare decays Bs→l+l- γ,(l=e,μ) in the Standard Model, including two kinds of contributions from the magnetic-penguin operator with virtual and real photons. We find that contributions to the exclusive decays from the magnetic-penguin operator b→sγ with real photons, which were regarded as negligible in the previous literature, are large and the branching ratios Bs→l+l-γ are enhanced by a factor of almost 2. With the predicted branching ratios of the order of 10-8, it is expected that these radiative dileptonic decays will be detected in LHC-b and B factories in the near future.

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