Estimating the annihilation decay B_s -> rho gamma with factorization

Details Estimating the annihilation decay B_s -> rho gamma with factorization Estimating the annihilation decay B_s -> rho gamma with factorization

2007-06-11

arxiv.org/abs/0706.1427v2

Mod.Phys.Lett.A24:3173-3181,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure

Scientific paper

The branching ratio for the rare two-body B_s -> rho gamma decay is calculated using the factorization assumption. This transition is dominated by the annihilation diagrams and, in principle, prone to receiving substantial contributions from new physics. We estimate Br(B_s -> rho gamma) = 1.6 x 10^-9 within the Standard Model and investigate the sensitivity of this decay mode to the effects of two new physics scenarios: vector quark model and supersymmetry. Our results indicate that the shift in branching ratio is at most around 10% with the addition of vector quarks and is negligibly small in the constrained minimal supersymmetric extension of the Standard Model.

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