2000/05/31 by Eung Jin Chun, Kyuwan Hwang, Jae Sik Lee
Physics and Astronomy · #B meson #Hadron #Neutrino Physics Research #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.62.076006
published as Phys.Rev. D62 (2000) 076006 · 20 pages, 2 figures. Eqs. (24,25,37) and typos corrected. Conclusions unchanged. To appear in Phy. Rev. D
arxiv created 2000/08/01 · openalex publication_date 2000/09/07 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We analyze the effect of R-parity violation in the minimal supersymmetric standard model on the CP asymmetries in \stackrel\ensuremath→bs\ensuremathγ 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_\ensuremathν_\ensuremathτ\ensuremath∼10 keV) and a moderate mass splitting of sfermions, the direct CP asymmetry around 15% and the nearly maximal mixing-induced CP asymmetry (\ensuremath∼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 similar sfermion mass splitting.