Ref Arxiv: hep-ph/0405036
Ref. & Cit.: NASA ADS
Résumé:

We consider the ratio of the cross section of production of heavy bottom-antibottom pairs ($sigma_{bbar b}$) to the cross section of production of top-antitop pairs ($sigma_{tbar t}$) at LHC. We show that in this ratio a major fraction of virtual contributions (including QCD components) disappears, leaving a residual dominant electroweak Yukawa effect that might be strongly enhanced in the presence of supersymmetry. A quantitative numerical analysis of the size of the effect is also performed under the assumption of a relatively light supersymmetric scenario.

Commentaires: Publication reprise avec PM/04-53.