Constraining the Unitarity Triangle with B -> K* gamma and B -> rho gamma

Details Constraining the Unitarity Triangle with B -> K* gamma and B -> rho gamma Constraining the Unitarity Triangle with B -> K* gamma and B -> rho gamma

2003-10-28

arxiv.org/abs/hep-ph/0310317v1

Eur.Phys.J.C33:s262-s264,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages; To appear in the proceedings of International Europhysics Conference on High-Energy Physics (HEP 2003), Aachen, Germa

Scientific paper

10.1140/epjcd/s2003-03-128-y

We discuss the exclusive radiative decays B -> K* gamma and B -> rho gamma in QCD factorization within the Standard Model. The analysis is based on the heavy-quark limit of QCD. Our results for these decays are complete to next-to-leading order in QCD and to leading order in the heavy-quark limit. Phenomenological implications for branching ratios and isospin breaking effects are discussed. Special emphasis is placed on constraining the CKM unitarity triangle from these observables.

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