Lepton Flavour Violation in minimal grand-unified type II seesaw models

Abstract

We revisit minimal non-supersymmetric models of SU(5) Grand Unification with the type II seesaw mechanism as the origin of neutrino masses. Imposing the requirement of gauge coupling unification and the proton lifetime bounds, we perform a Bayesian fit and obtain robust quantitative information on the mass scales of the beyond the Standard Model particles. We then study lepton-flavour-violating (LFV) processes induced by the type II scalar triplet and its SU(5) partners, showing that the interplay of upcoming searches for different LFV observables can provide additional information on the masses of the new particles, as well as non-trivial constraints on neutrino parameters.

arXiv comment35 pages, 12 figures; v2: references added, discussion improved, conclusions unchanged; version to be published in PRD

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Cited by in corpus (3)

• $W$ Boson Mass and Grand Unification via the Type-$\mathrm{I}\mathrm{I}$ Seesaw-like Mechanism
• Type-II Majoron Dark Matter
• Neutrino Mass Induced $n$-$\overline{n}$ Oscillation