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arXiv · hep-ph/0501237

Chiral symmetry and exclusive B decays in the SCET

Benjamin Grinstein·Dan Pirjol
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Abstract

We describe 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 Lambda/mb by calculable factorizable terms. We use the chiral effective theory to compute the leading corrections to these symmetry relations in B -> M_n pi ell\barνand B -> M_n pi e+e- decays.

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Benjamin Grinstein, Dan Pirjol. 2005-02-16. Chiral symmetry and exclusive B decays in the SCET. https://doi.org/10.1016/j.physletb.2005.04.024

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