$B \to ργ$ Decay in the Large Energy Effective Theory

Details $B \to ργ$ Decay in the Large Energy Effective Theory $B \to ργ$ Decay in the Large Energy Effective Theory

2002-09-28

arxiv.org/abs/hep-ph/0209346v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 EPS figures, talk at the 12th International Seminar "Quarks'2002", Novgorod the Great, Russia, June 1-7, 2002

Scientific paper

The branching ratio for the $B \to \rho \gamma$ decay in the next-to-leading order (NLO) in the strong coupling $\alpha_s$ and in leading power in $\Lambda_{\rm QCD}/m_B$ is presented. The corrections are combined the hard-vertex, hard-spectator and annihilation contributions and found to be large. The theoretical expectation for the branching ratios, the isospin-violating ratio and for the direct CP-asymmetry in the $B \to \rho \gamma$ decays are presented.

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