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CP Asymmetries in Radiative B Decays with R-parity Violation

Eung Jin Chun·Kyuwan Hwang·Jae Sik Lee
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Abstract

We analyze the effect of R-parity violation in the minimal supersymmetric standard model on the CP asymmetries in $b\to s γ$ decay. The direct and mixing-induced CP asymmetries arising from the lepton number violating couplings are strongly constrained by the current experimental limits on the corresponding couplings. Allowing a heavy neutrino ($m_{ν_τ}\sim10$ keV) and a moderate mass splitting of sfermions, the direct CP asymmetry around 15 % and the nearly maximal mixing-induced CP asymmetry ($\sim 100 %$) can be realized, depending on the R-parity conserving contributions to the radiative $b$ decay. With the baryon number violating couplings, only the mixing-induced CP asymmetry arises and it can be maximal provided there is a the similar sfermion mass splitting.

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Eung Jin Chun, Kyuwan Hwang, Jae Sik Lee. 2000-08-01. CP Asymmetries in Radiative B Decays with R-parity Violation. https://doi.org/10.1103/physrevd.62.076006

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