B-->pi and B-->K transitions in standard and quenched chiral perturbation theory

Preprint

25 October 2002

preprint
Published by arXiv in arXiv

Abstract

We study the effects of chiral logs on the heavy-->light pseudoscalar meson transition form factors by using the standard and quenched chiral perturbation theory combined with the static heavy quark limit. Resulting expressions are used to indicate the amount of uncertainties due to the use of the quenched approximation in the current lattice studies. They may also be used to assess the amount of systematic uncertainties induced by missing chiral log terms in extrapolating towards the physical pion mass. We also provide the coefficient multiplying the quenched chiral log, which may be useful if the quenched lattice studies are performed with very light mesons.

Keywords

PERFORMED WITH VERY LIGHT
AMOUNT OF UNCERTAINTIES
PERTURBATION THEORY
CHIRAL PERTURBATION
QUENCHED CHIRAL
UNCERTAINTIES
CHIRAL LOG
MESON

All Related Versions

Version 1, 2002-10-25, ArXiv
Version 2, 2002-11-11, ArXiv
Version 3, 2003-02-14, ArXiv
Version 1, 2003-04-30, ArXiv (Unconfirmed version)
Version 2, 2003-05-19, ArXiv (Unconfirmed version)
Published version: Physical Review D, 67 (5), 054010.

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