Higgs contribution to theW pair production in left-right electroweak model

Abstract

We investigate the neutral Higgs contributions to the pair production of light (W1) and heavy (W2) charged gauge bosons of the left-right symmetric electroweak model in electron-positron annihilations. The Higgs contributions are shown to be of the same order of magnitude as the chirality flip part of the Majorana neutrino exchange channel (they cancel each other at high energies). Our numerical examples concern with the processe+e−→W1W2 where the contribution of the Higgses is more important than in the pair production of equal mass weak bosons. It turns out that the Higgs contributions are negligibly small in the energy range of the next generation linear colliders if the gauge coupling constants of the left-handed and right-handed interactions are equal and the see-saw relation between the neutrino mixing angle and neutrino masses is strictly valid as we have assumed.