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Estimating the annihilation decay B_s to rho gamma with factorization

Abstract : The branching ratio for the rare two-body B_s to 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 to rho gamma) ≈ 1.6 × 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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Contributor : Jeanine Pellet <>
Submitted on : Tuesday, December 1, 2009 - 4:16:07 PM
Last modification on : Thursday, February 25, 2021 - 10:58:19 AM
Long-term archiving on: : Tuesday, October 16, 2012 - 3:11:01 PM


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M. R. Ahmady, F. Mahmoudi. Estimating the annihilation decay B_s to rho gamma with factorization. Modern Physics Letters A, World Scientific Publishing, 2009, 24, pp.3173-3181. ⟨10.1142/S0217732309032150⟩. ⟨in2p3-00437886⟩



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