Quartic anomalous couplings at LEP

Citation
G. Montagna et al., Quartic anomalous couplings at LEP, PHYS LETT B, 515(1-2), 2001, pp. 197-205
Citations number
33
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
515
Issue
1-2
Year of publication
2001
Pages
197 - 205
Database
ISI
SICI code
0370-2693(20010823)515:1-2<197:QACAL>2.0.ZU;2-P
Abstract
The search for quartic anomalous gauge couplings at LEP requires appropriat e predictions for the radiative processes e(+)e(-) --> nu<(<nu>)over bar>ga mma gamma, e(+)e(-) --> q (q) over bar gamma gamma and e(+)e(-) --> 4 fermi ons +gamma. Matrix elements are exactly computed at the tree level, and the effects of anomalous couplings and initial-state radiation are included. C omparisons with results and approximations existing in the literature are s hown and commented. Improved versions of the event generators NUNUGPV and W RAP are made available for experimental analysis. (C) 2001 Published by Els evier Science B.V.