ESTIMATING THE ANNIHILATION DECAY B-s -> rho gamma WITH FACTORIZATION
2009 (English)In: Modern Physics Letters A, ISSN 0217-7323, E-ISSN 1793-6632, Vol. 24, no 39, 3173-3181 p.Article in journal (Refereed) Published
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) approximate to 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.
Place, publisher, year, edition, pages
2009. Vol. 24, no 39, 3173-3181 p.
B-s decay, effective Hamiltonian, vector quark, supersymmetry
IdentifiersURN: urn:nbn:se:uu:diva-138108DOI: 10.1142/S0217732309032150ISI: 000273174200002OAI: oai:DiVA.org:uu-138108DiVA: diva2:378907