Insights on the Cosmic Origin of Matter from Proton Stability
arXiv:2505.18259 · doi:10.1088/1475-7516/2025/11/043
Abstract
We investigate the phenomenology of a model in which the proton is rendered absolutely stable by an IR mechanism that remains robust against unknown quantum gravity effects. A linear combination of baryon number and lepton flavors is gauged and spontaneously broken to a residual discrete gauge symmetry enforcing a strict selection rule: . Despite its minimal field content, the model successfully accounts for established empirical evidence of physics beyond the SM. High-scale symmetry breaking simultaneously provides a seesaw mechanism explaining the smallness of neutrino masses, minimal thermal leptogenesis, and a viable phenomenology of the majoron as dark matter. Any cosmic string-wall network remaining after inflation is unstable for numerous charge assignments. Lepton flavor non-universality, central to the construction, leads to predictive neutrino textures testable via oscillation experiments, neutrinoless double beta decay, and cosmology. The model motivates searches in - and -ray lines, neutrino telescopes, and predicts CMB imprints.
arXiv comment25 pages, 9 figures; v2: matches the published version
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