B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization

Details B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization

2004-01-26

arxiv.org/abs/hep-ph/0401188v2

Phys.Rev. D70 (2004) 054015

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, v2 phenomenological analysis of B->pi pi added

Scientific paper

10.1103/PhysRevD.70.054015

Using the soft-collinear effective theory we derive the factorization theorem for the decays B-> M1 M2 with M{1,2}= pi,K, rho,K*, at leading order in Lambda/E_M and Lambda/mb. The results derived here apply even if alpha_s(E_M Lambda) is not perturbative, and we prove that the physics sensitive to the E*Lambda scale is the same in B-> M1 M2 and B-> M form factors. We argue that c-cbar penguins could give long-distance effects at leading order. Decays to two transversely polarized vector mesons are discussed. Analyzing B-> pi pi we find predictions for B^0 -> pi^0 pi^0 and |V_{ub}| f_+(0) as a function of gamma.

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