Quantum correction to tiny vacuum expectation value in two Higgs doublet model for Dirac neutrino mass

Details Quantum correction to tiny vacuum expectation value in two Higgs doublet model for Dirac neutrino mass Quantum correction to tiny vacuum expectation value in two Higgs doublet model for Dirac neutrino mass

2011-07-06

arxiv.org/abs/1107.1026v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages,5 figures. The version corresponds to the revised one accepted in PRD. In version 3, we have corrected errors on the

Scientific paper

We study a Dirac neutrino mass model of Davidson and Logan. In the model, the smallness of the neutrino mass is originated from the small vacuum expectation value of the second Higgs of two Higgs doublets. We study the one loop effective potential of the Higgs sector and examine how the small vacuum expectation is stable under the radiative correction. By deriving formulae of the radiative correction, we numerically study how large the one loop correction is and show how it depends on the quadratic mass terms and quartic couplings of the Higgs potential. The correction changes depending on the various scenarios for extra Higgs mass spectrum.

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