B → (ρ, ω)γ Decays and CKM Phenomenology

2006/10/12 by Ali, Ahmed, Parkhomenko, Alexander
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.hep-ph/0610149

Abstract

We review and update the branching ratios for the B → (ρ,ω) γ decays, calculated in the QCD factorization approach in the next-to-leading order (NLO) in the strong coupling α_s and to leading power in Λ_{\rm QCD}/m_b. The corrections take into account the vertex, hard-spectator and annihilation contributions and are found to be large. Theoretical expectations for the branching ratios, CP-asymmetry, isospin- and SU (3)_{\rm F}-violating ratios in the B → ργ and B → ωγ decays are presented and compared with the available data.

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