Phenomenology of Majorons

Julian Heeck

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arXiv · 1709.07670

Phenomenology of Majorons

Julian Heeck

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Abstract

Majorons are the Goldstone bosons associated to lepton number and thus closely connected to Majorana neutrino masses. Couplings to charged fermions arise at one-loop level, including lepton-flavor-violating ones that lead to decays $\ell\to \ell' J$, whereas a coupling to photons is generated at two loops. The typically small couplings make massive majorons a prime candidate for long-lived dark matter. Its signature decay into two mono-energetic neutrinos is potentially detectable for majoron masses above MeV.

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Julian Heeck. 2017-09-22. Phenomenology of Majorons. https://arxiv.org/abs/1709.07670

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