TY - JOUR
T1 - Factorization in exclusive semileptonic radiative B decays
AU - Cirigliano, Vincenzo
AU - Pirjol, Dan
PY - 2005/11/1
Y1 - 2005/11/1
N2 - We derive a new factorization relation for the semileptonic radiative decay B→π νγ in the kinematical region of a slow pion |p→π|∼Λ and an energetic photon Eγ Λ, working at leading order in Λ/mb. In the limit of a soft pion, the nonperturbative matrix element appearing in this relation can be computed using chiral perturbation theory. We present a phenomenological study of this decay, which may be important for a precise determination of the exclusive nonradiative decay.
AB - We derive a new factorization relation for the semileptonic radiative decay B→π νγ in the kinematical region of a slow pion |p→π|∼Λ and an energetic photon Eγ Λ, working at leading order in Λ/mb. In the limit of a soft pion, the nonperturbative matrix element appearing in this relation can be computed using chiral perturbation theory. We present a phenomenological study of this decay, which may be important for a precise determination of the exclusive nonradiative decay.
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U2 - 10.1103/PhysRevD.72.094021
DO - 10.1103/PhysRevD.72.094021
M3 - Article
AN - SCOPUS:29744433268
SN - 1550-7998
VL - 72
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
M1 - 094021
ER -