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arXiv · 2205.12353

Constraints on energy scales from dark matter decay in a gauged $B-L$ model

Guillermo Gambini·Pedro C. de Holanda·Saulo Carneiro
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Abstract

Popular extensions of the standard model of particle physics feature new fields and symmetries which could, for example, dynamically generate neutrino masses from $B-L$ spontaneous symmetry breaking. If a new light scalar that decays into dark radiation appears in the spectrum of the theory, it could significantly modify the cosmological observables. In this case, cold dark matter could have a stable and a decaying component and limits on its decay rate $\Gamma_{\rm dcdm}$ can be used to put constraints on the new energy scales of a given model. We illustrate this idea using a gauged $B-L$ model where the dark radiation is in the form of light neutrinos.

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Guillermo Gambini, Pedro C. de Holanda, Saulo Carneiro. 2022-05-24. Constraints on energy scales from dark matter decay in a gauged $B-L$ model. https://doi.org/10.1007/s13538-025-01952-1

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