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Special Features of Heavy Quark-antiquark Pair Production Ratios at LHC ![]() Auteur(s): Renard F. M., Beccaria M., Verzegnassi C.
(Document sans référence bibliographique) Texte intégral en Openaccess : 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. |