Nonleptonic two-body B-decays including axial-vector mesons in the final state

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dc.creatorCalderon, G.
dc.creatorMunoz, J. H.
dc.creatorVera, C. E.
dc.date2007-05-08
dc.date2007-09-10
dc.date.accessioned2026-07-07T10:55:25Z
dc.date.available2026-07-07T10:55:25Z
dc.descriptionWe present a systematic study of exclusive charmless nonleptonic two-body B decays including axial-vector mesons in the final state. We calculate branching ratios of B\to PA, VA and AA decays, where A, V and P denote an axial-vector, a vector and a pseudoscalar meson, respectively. We assume naive factorization hypothesis and use the improved version of the nonrelativistic ISGW quark model for form factors in B\to A transitions. We include contributions that arise from the effective ΔB=1 weak Hamiltonian H_{eff}. The respective factorized amplitude of these decays are explicitly showed and their penguin contributions are classified. We find that decays B^-to a_1^0π^-,\barB^0\to a_1^{\pm}π^{\mp}, B^-\to a_1^-\bar K^0, \bar B^0\to a_1^+K^-, \bar B^0\to f_1\bar K^0, B^-\to f_1K^-, B^-\to K_1^-(1400)\etap, B^-\to b_1^-\bar K^{0}, and \bar B^0\to b_1^+π^-(K^-) have branching ratios of the order of 10^{-5}. We also study the dependence of branching ratios for B \to K_1P(V,A) decays (K_1=K_1(1270),K_1(1400)) with respect to the mixing angle between K_A and K_B.
dc.description28 pages, 2 tables and one reference added, notation changed in appendices, some numerical results and abstract corrected
dc.identifierhttps://arxiv.org/abs/0705.1181
dc.identifierhttp://arxiv.org/abs/0705.1181
dc.identifierPhys.Rev.D76:094019,2007
dc.identifierdoi:10.1103/PhysRevD.76.094019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186073
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNonleptonic two-body B-decays including axial-vector mesons in the final state
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