PS01 Heavy Flavour Physics
Constraining the unitarity triangle with B→ K * γ and B→ρ γ
Institute for High-Energy Phenomenology, Newman Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, NY 14853, U.S.A. CLNS 03/1847,
Accepted: 7 November 2003
Published online: 25 November 2003
We discuss the exclusive radiative decays B→ K * γ and B →ρ γ 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.
© Società Italiana di Fisica, Springer-Verlag, 2004