O(alpha_s^2) corrections to b -> c decay at zero recoil

Preprint

30 November 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9712205

Abstract

Analytic formulae are presented for the two-loop perturbative QCD corrections to b -> c decay at the zero recoil point, which are required for the extraction of |V_bc| from measurements of exclusive B -> D* l nu decays. The results are in agreement with those of Czarnecki and Melnikov. Some comments on the numerical evaluation of the diagrams involved are made.

Keywords

ANALYTIC FORMULAE
RECOIL ANALYTIC
ZERO RECOIL
EXTRACTION
TWO LOOP
FORMULAE
ALPHA_S
DECAY
QCD

All Related Versions

Version 1, 1997-11-30, ArXiv

This publication has 0 references indexed in Scilit: