Non-leptonic annihilation decays of B mesons with a natural infrared cutoff

Details Non-leptonic annihilation decays of B mesons with a natural infrared cutoff Non-leptonic annihilation decays of B mesons with a natural infrared cutoff

2008-03-02

arxiv.org/abs/0803.0154v3

Int.J.Mod.Phys.A24:4133-4155,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 5 figures; text corrections, section II was shortened, added references, figure 2 was splitted in two, figures 3 and

Scientific paper

10.1142/S0217751X09044656

Within the QCD factorization approach we compute the amplitudes for annihilation channels of B mesons decays into final states containing two pseudoscalar particles. These decays may be plagued by effects like non-perturbative physics or breaking of the factorization hypothesis and imply, at some extent, the introduction of an infrared cutoff in the calculation of amplitudes. We compute the decays with the help of infrared finite gluon propagators and coupling constants that were obtained in different solutions of the QCD Schwinger-Dyson equations. These solutions yield a natural cutoff for the amplitudes, and we argue that a systematic study of these B decays may provide a test for the QCD infrared behavior.

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