New mechanism for neutrino mass generation and triply charged Higgs bosons at the LHC

By K. Babu, S. Nandi, Z. Tavartkiladze. 2009

136 citations recorded by the source corpus.

We propose a new mechanism for generating small neutrino masses which predicts the relation m{sub {nu}}{approx}v{sup 4}/M{sup 3}, where v is the electroweak scale, rather than the conventional seesaw formula m{sub {nu}}{approx}v{sup 2}/M. Such a mass relation is obtained via effective dimension seven operators LLHH(H{sup {dagger}}H)/M{sup 3}, which arise when an isospin 3/2 Higgs multiplet {phi} is introduced along with isotriplet leptons. The masses of these particles are naturally in the TeV scale. The triply charged Higgs boson contained in {phi} can be pair produced at the LHC and the Tevatron, with {phi}{sup +++} decaying into W{sup +}l{sup +}l{sup +} or W{sup +}W{sup +}W{sup +}, possibly with displaced vertices. The leptonic decays of {phi}{sup +++} will help discriminate between normal and inverted hierarchies of neutrino masses. This scenario also allows for raising the standard Higgs boson mass to values in excess of 500 GeV.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ee7ea23b8839a2680f4ebd851cbed8d628234e7e

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In Nuclear and High Energy Physics

1. Z. Xing
2. F. Feruglio

Citations in the corpus

• Flavor structures of charged fermions and massive neutrinos (2019, background): “The obvious drawback of such TeV-scale seesaw scenarios and other models along a different line of thought [202, 566, 567] is the introduction of too many new particles which are usually hard to be detected.”