W and Z boson pair production at electron-positron colliders in gauge-Higgs unification

Le résumé fourni par la source

We examine $W$ and $Z$ boson pair production processes at electron-positron collider experiments in the $SU(3{)}_{C}\ifmmode\times\else\texttimes\fi{}SO(5{)}_{W}\ifmmode\times\else\texttimes\fi{}U(1{)}_{X}$ gauge-Higgs unification (GHU) model. We find that the deviation of the total cross section for the ${e}^{\ensuremath{-}}{e}^{+}\ensuremath{\rightarrow}{W}^{\ensuremath{-}}{W}^{+}$ process from the Standard Model (SM) in the GHU model with parameter sets, which are consistent with the current experiments, is about 0.5% to 1.5% and 0.6% to 2.2% for $\sqrt{s}=250\text{ }\text{ }\mathrm{GeV}$ and 500 GeV, respectively, depending on the initial electron and positron polarization. We find that for the ${e}^{\ensuremath{-}}{e}^{+}\ensuremath{\rightarrow}ZZ$ process the deviation from the SM in the GHU model is at most 1%. We find that unitarity bound for the ${e}^{\ensuremath{-}}{e}^{+}\ensuremath{\rightarrow}{W}^{\ensuremath{-}}{W}^{+}$ process is satisfied in the GHU model as in the SM, as a consequence of the relationship among coupling constants.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.