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arXiv · 2501.01286

Gravitational waves from color restoration in a leptoquark model of radiative neutrino masses

Mårten Bertenstam·Marco Finetti·António P. Morais·Roman Pasechnik·Johan Rathsman
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Abstract

We study the first-order phase transitions and the emerging stochastic gravitational wave spectrum in a minimal leptoquark extension of the Standard Model that explains active neutrino oscillation data while satisfying current flavor physics constraints. This model exhibits diverse phase transition patterns, including color symmetry-breaking scenarios in the early Universe. Strong correlations between model parameters and gravitational-wave signals yield testable predictions for future experiments such as LISA, BBO, and DECIGO. Specifically, a detectable signal in the mHz$\unicode{x2013}$0.1~Hz frequency range features color-restoration and leptoquark masses near $1.5~\mathrm{TeV}$. With this article, we also present the first application in the literature of \texttt{Dratopi}. This is a soon-to-be-released tool for phase transition analysis using the dimensional reduction formalism, that interfaces the \texttt{DRalgo} package with \texttt{Python} and a slightly modified version of \texttt{CosmoTransitions}.

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Mårten Bertenstam, Marco Finetti, António P. Morais, Roman Pasechnik, Johan Rathsman. 2025-01-02. Gravitational waves from color restoration in a leptoquark model of radiative neutrino masses. https://arxiv.org/abs/2501.01286

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