P,V, S, A, A' , T, P (2S), V (2S). Our analysis is carried out assuming factorization hypothesis and using the WSB, ISGW and CLFA quark models.P,V, S, A, A' , T, P (2S), V (2S). Our analysis is carried out assuming factorization hypothesis and using the WSB, ISGW and CLFA quark models.]]>
P,V, S, A, A , T, P (2S), V (2S). Nuestro análisis se desarrolla asumiendo hipótesis de factorización y utilizando los modelos de quarks WSB, ISGW y CLFA.]]>
Useful ratios between two–body nonleptonic and semileptonic decays of B mesons
J.H. Muñoza,b and N. Quinteroa,c
a Departamento de Física, Universidad del Tolima, Apartado Aéreo 546, Ibagué, Colombia, e–mails: jhmunoz@ut.edu.co; nquintero@fis.cinvestav.mx
b Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150, 22290–180, Rio de Janeiro, RJ, Brazil.
c Departamento de Física, Centro de Investigación y de Estudios Avanzados, Apartado Postal 14–740, México D.F., 07000 México.
]]>Recibido el 3 de diciembre de 2010
Aceptado el 6 de mayo de 2011
Abstract
We compute important ratios between decay widths of some exclusive two–body nonleptonic and semileptonic B decays, which could be test of factorization hypothesis. We also present a summary of the expressions of the decay widths and differential decay rates of these decays, at tree level, including l = 0 (ground state), l = 1 (orbitally excited) and n = 2 (radially excited) mesons in the final state. From a general point of view, we consider eight transitions, namely H P,V, S, A, A' , T, P (2S), V (2S). Our analysis is carried out assuming factorization hypothesis and using the WSB, ISGW and CLFA quark models.
Keywords: B physics; semileptonic decays; nonleptonic decays.
Resumen
Calculamos varias relaciones importantes entre los anchos de decaimiento de canales exclusivos no leptónicos y semileptónicos del mesón B, las cuales pueden servir como prueba a la hipótesis de factorización. También, presentamos un resumen sobre las expresiones de los anchos de decaimiento y los anchos de decaimiento diferenciales, para estos procesos, a nivel árbol, incluyendo mesones con l = 0 (sin excitación orbital), l = 1 (excitados orbitalmente) y n = 2 (excitados radialmente) en el estado final. Desde un punto de vista general, consideramos ocho transiciones: H P,V, S, A, A , T, P (2S), V (2S). Nuestro análisis se desarrolla asumiendo hipótesis de factorización y utilizando los modelos de quarks WSB, ISGW y CLFA.
PACS: 13.20.–v; 13.25.–k; 12.39.–x
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