Graphical amplitudes from SCET
高能物理 - 唯象学
2009-11-10 v2
摘要
We discuss the relationship between the graphical amplitudes T, C, P, ... used to parameterize nonleptonic B decay amplitudes, and matrix elements of operators in the soft-collinear effective theory (SCET) at leading order in \Lambda/m_b. Using the SU(3) flavor symmetry of the weak Hamiltonian we derive all-order constraints on the electroweak penguin contributions to the Wilson coefficients of SCET operators.
引用
@article{arxiv.hep-ph/0408161,
title = {Graphical amplitudes from SCET},
author = {Christian W. Bauer and Dan Pirjol},
journal= {arXiv preprint arXiv:hep-ph/0408161},
year = {2009}
}
备注
7 pages; one additional relation included, minor corrections. version published in Physics Letters B