The semileptonic B->pi decay in a Constituent Quark-Meson model
A. Deandrea, R. Gatto, G. Nardulli, A. D. Polosa
TL;DR
This paper calculates the form factors for the B-> pi l nu decay using a Constituent Quark-Meson model, incorporating pion momentum expansion and corrections to the soft pion limit.
Contribution
It introduces a novel application of the Constituent Quark-Meson model to evaluate B-> pi decay form factors with momentum expansion and derivative corrections.
Findings
Form factors computed within the model.
Soft pion limit results obtained.
Corrections to the soft pion approximation considered.
Abstract
We evaluate the form factors describing the exclusive decay B-> pi l nu by using a Constituent Quark-Meson model based on an effective quark-meson Lagrangian (CQM). The model allows for an expansion in the pion momenta and we consider terms up to the first order in the pion field derivatives. We compute the leading terms in the soft pion limit and consider corrections to this limit.
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