Chiral symmetry and exclusive B decays in the SCET

Benjamín Grinstein, Dan Pirjol

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We construct a chiral formalism for processes involving both energetic hadrons and soft Goldstone bosons, which extends the application of soft-collinear effective theory to multibody B decays. The nonfactorizable helicity amplitudes for heavy meson decays into multibody final states satisfy symmetry relations analogous to the large energy form factor relations, which are broken at leading order in Λ/mb by calculable factorizable terms. We use the chiral effective theory to compute the leading corrections to these symmetry relations in B→Mnπℓν̄ and B→Mnπℓ+ℓ- decays, with one energetic meson Mn and one soft pion.

Original languageEnglish
Pages (from-to)213-220
Number of pages8
JournalPhysics Letters B
Volume615
Issue number3-4
DOIs
StatePublished - 2 Jun 2005

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