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

Christian W. Bauer·Dan Pirjol·Ira Z. Rothstein·Iain W. Stewart
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Abstract

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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Christian W. Bauer, Dan Pirjol, Ira Z. Rothstein, Iain W. Stewart. 2004-06-02. B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization. https://doi.org/10.1103/physrevd.70.054015

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