Nonfactorizable QCD and Electroweak Corrections to the Hadronic Z Boson Decay Rate

Preprint

26 November 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9608366

Abstract

We present an analysis of two-loop mixed QCD and electroweak corrections to the decay of the Z boson into light quarks. We find that the naive factorization of QCD and electroweak corrections does not describe correctly the two-loop effects. The nonfactorizable corrections shift the width of the Z boson by approximately -0.55(3) MeV and increase the central value of the strong coupling constant determined at LEP by 0.001.

Keywords

ELECTROWEAK CORRECTIONS
NONFACTORIZABLE QCD
QCD AND ELECTROWEAK
HADRONIC Z
Z BOSON

All Related Versions

Version 1, 1996-08-19, ArXiv
Version 2, 1997-11-26, ArXiv
Published version: Physical Review Letters, 77 (19), 3955.

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