Graphical amplitudes from SCET

Preprint

12 January 2005

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/0408161

Abstract

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.

Keywords

AMPLITUDES FROM SCET
GRAPHICAL AMPLITUDES
WILSON COEFFICIENTS
SCET WE DISCUSS
PARAMETERIZE
COLLINEAR
DECAY

All Related Versions

Version 1, 2004-08-14, ArXiv
Version 2, 2005-01-12, ArXiv
Published version: Physics Letters B, 604 (3-4), 183.

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