COMPLETE TREE LEVEL EVALUATION FOR THE REACTION E(-)-]V(E)(V)OVER-BAR(E)W(+)W(-) BY AN AUTOMATIC AMPLITUDE GENERATOR()E()

Authors
NAJIMA R KURIHARA Y
Citation
R. Najima et Y. Kurihara, COMPLETE TREE LEVEL EVALUATION FOR THE REACTION E(-)-]V(E)(V)OVER-BAR(E)W(+)W(-) BY AN AUTOMATIC AMPLITUDE GENERATOR()E(), Computer physics communications, 99(1), 1996, pp. 73-76
Citations number
15
Categorie Soggetti
Mathematical Method, Physical Science","Physycs, Mathematical","Computer Science Interdisciplinary Applications
Journal title
Computer physics communications → ACNP
ISSN journal
00104655
Volume
99
Issue
1
Year of publication
1996
Pages
73 - 76
Database
ISI
SICI code
0010-4655(1996)99:1<73:CTLEFT>2.0.ZU;2-G
Abstract
We present the complete calculation for the reaction e(+)e(-) --> <nu( e)(nu)over bar eW+W-> which includes all the tree level Feynman diagra ms (60) in electroweak theory by employing the automatical amplitude g enerator GRACE/CHANEL. The detailed behaviour of the W boson productio n is analyzed. It is pointed out that the previous calculations (fusio n and bremsstrahlung types only) are insufficient and that the s-chann el contribution (e(+)e(-) annihilation type) is not small, especially in the case of large momentum W boson production.