Complete Analysis on the Short Distance Contribution of B_s→ ℓ⁺ℓ^-γ in Standard Model

2013/03/04 by Wenyu Wang, Zhao-Hua Xiong, Si-Hong Zhou
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1088/0256-307x/30/11/111202

arXiv admin note: substantial text overlap with arXiv:1207.1978

arxiv created 2013/03/04 · arxiv updated 2015/06/15

Abstract

Using the B_s meson wave function extracted from non-leptonic B_s decays, we evaluate the short distance contribution of rare decays B_s→ ℓ⁺ℓ^-γ(ℓ=e,μ) in the standard model, including all the possible diagrams. We focus on the contribution from four-quark operators which are not taken into account properly in previous researches. We found that the contribution is large, leading to the branching ratio of B_s→ ℓ⁺ℓ^-γ being nearly enhanced by a factor 3 and up to 1.7× 10^-8. The predictions for such processes can be tested in the LHC-b and B factories in near future.

Citations

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