BEHAVIOR OF THE ABSORPTIVE PART OF THE W-+ - ELECTROMAGNETIC VERTEX/

Authors
BEUTHE M FELIPE RG CASTRO GL PESTIEAU J
Citation
M. Beuthe et al., BEHAVIOR OF THE ABSORPTIVE PART OF THE W-+ - ELECTROMAGNETIC VERTEX/, Nuclear physics. B, 498(1-2), 1997, pp. 55-67
Citations number
14
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. B → ACNP
ISSN journal
05503213
Volume
498
Issue
1-2
Year of publication
1997
Pages
55 - 67
Database
ISI
SICI code
0550-3213(1997)498:1-2<55:BOTAPO>2.0.ZU;2-O
Abstract
The absorptive part of the WW gamma vertex induced by massive fermion loops is considered for different kinematical configurations. We show that the axial part of this vertex is different from zero not only whe n massive fermions are involved but also for massless fermion loops, i f one of the W bosons is space-like and the other is time-like. We als o discuss in what sense Low's soft photon theorem is satisfied. (C) 19 97 Elsevier Science B.V.