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arXiv · 2406.13850

Quasi-Dirac Heavy Neutral Leptons in the Left-Right Symmetric Model

Oleksii Mikulenko
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Abstract

We discuss the phenomenology of a pair of degenerate GeV-scale Heavy Neutral Leptons within the Left-Right Symmetric Model (LRSM) framework, with the third fermion serving as a dark matter candidate. We highlight the potential of the recently approved SHiP experiment to test the existence of the light DM species, and the signatures of lepton number violation as a possible experimental probe of the model in various experiments. Our findings include concrete predictions, in some part of the model's parameter space, for the effective right-handed couplings $(V^{R}_{e})^2:(V^{R}_{\mu})^2:(V^{R}_{\tau})^2 = 0.16:0.47:0.38$ (normal neutrino hierarchy), $0.489 : 0.22 : 0.30$ (inverted hierarchy) of the degenerate pair.

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Oleksii Mikulenko. 2024-06-19. Quasi-Dirac Heavy Neutral Leptons in the Left-Right Symmetric Model. https://arxiv.org/abs/2406.13850

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