Charged Higgs Boson Contribution to $\overline{\nu}_{e}-e$ Scattering from Low to Ultrahigh Energy in Higgs Triplet Model

Abstract

We study the νe − e scattering from low to ultrahigh energy in the framework of Higgs Triplet Model (HTM). We add the contribution of charged Higgs boson exchange to the total cross section of the scattering. We obtain the upper bound hee/M H ± 2.8 × 10 −3 GeV −1 in this process from low energy experiment. We show that by using the upper bound obtained, the charged Higgs contribution can give enhancements to the total cross section with respect to the SM prediction up to 5.16 % at E ≤ 10 14 eV and maximum at s ≈ M 2 H ± and would help to determine the feasibility experiments to discriminate between SM and HTM at current available facilities.

Constraints on nonstandard intermediate boson exchange models from neutrino-electron scattering

“…Leptons, quarks and gauge bosons acquire their mass through the Higgs mechanism [28], while neutrinos still remain massless in the SM. In order to introduce and explain the smallness of neutrino masses without requiring an extra right-handed neutrino, one of the simplest models among other mechanisms is the Higgs triplet model (HTM), through which neutrinos gain their mass [29,30]. In HTM, apart from the neutral scalar Higgs boson (h 0 ), there also appear singly charged (H + ) and doubly charged (H ++ ) ones, since Higgs triplets under the standard SU (2) L gauge group have two units of weak hypercharge.…”