TL;DR
This paper reviews theoretical frameworks for neutrino mass models, emphasizing Majorana neutrinos, spontaneous lepton number breaking, and the phenomenology of the majoron Goldstone boson.
Contribution
It provides a concise overview of neutrino mass models with a focus on spontaneous lepton number breaking and majoron phenomenology.
Findings
Highlights the role of Majorana neutrinos in beyond Standard Model physics
Discusses the implications of a massless majoron Goldstone boson
Summarizes current neutrino mass model landscape
Abstract
Neutrino masses provide one of the clearest indications of physics beyond the Standard Model. In this brief review, I discuss the main theoretical frameworks developed to account for them, with particular emphasis on scenarios in which neutrinos are Majorana particles. After a short overview of the current landscape of neutrino mass models, I focus on constructions featuring the spontaneous breaking of global lepton number and examine the phenomenological implications of a massless Goldstone boson, the majoron.
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