Abstract
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.
| Original language | English |
|---|---|
| Article number | 094021 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 72 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1 Nov 2005 |
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