Vector boson Pair Production at Supercolliders; useful approximate helicity amplitudes

Abstract

We study vector boson pair production at $LHC$ and $SSC$, taking into account the effects generated by the anomalous vector boson and Higgs couplings induced by the operators ${\mathcal{O}}_W$ and ${\mathcal{O}}_{UW}$, which are the only dim=6 operators preserving $SU(2{)}_c$. These operators lead to enhanced production of transverse vector bosons, as opposed to the enhanced production of longitudinal gauge bosons, induced in case $M_H\text{gsim}1TeV$, by dim=4 terms already existing in the Standard Model lagrangian. For vector boson pair masses larger than $1TeV$, we establish very simple approximate expressions for the standard as well as the non-standard helicity amplitudes for $q\bar{q}$ annihilation and vector boson fusion, which accurately describe the physics. These expressions should simplify the experimental search for such interactions. We finally discuss the observability and the disentangling of these interactions.

Comments: 22 pages, 6 figures avaible by air mail upon request , (e-mail layssac@lpmsun2.lpm.univ-montp2.fr PM/93-26 THES-TP 93/8