Light-cone sum rules for the heavy-to-light transition in the effective theory
High Energy Physics - Phenomenology
2009-11-11 v2
Abstract
Heavy-to-light weak form factor is calculated using the light-cone sum rule (LCSR)in the framework of soft-collinear effective theory (SCET). There are spin-symmetric and spin-nonsymmetric contributions. Leading order spin-symmetric contribution corresponds to the ''soft overlap'' where some of the partons carry very small momentum. The next-to-leading order spin-symmetric and spin-nonsymmetric parts are characterized by a collinear gluon exchange with the spectator quark. We reproduce the full theory LCSR results and give comments on recent LCSR in SCET.
Keywords
Cite
@article{arxiv.hep-ph/0508010,
title = {Light-cone sum rules for the heavy-to-light transition in the effective theory},
author = {Jong-Phil Lee},
journal= {arXiv preprint arXiv:hep-ph/0508010},
year = {2009}
}
Comments
16 pages, 3 figures. Minor changes, references added. PLB accepted version