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arXiv · 2202.05275

Leptoquarks with Exactly Stable Protons

Joe Davighi·Admir Greljo·Anders Eller Thomsen
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Abstract

We explore a novel mechanism to restrict TeV-scale leptoquark interactions and render the proton exactly stable to all orders in the effective field theory expansion. A scalar condensate breaks a lepton-flavoured $\mathrm{U}(1)_X$ gauge symmetry in the ultraviolet and generates neutrino masses, leaving a discrete $\mathbb{Z}_9$ or $\mathbb{Z}_{18}$ gauge symmetry in the infrared, forbidding $ΔB = 1$ processes. This provides an elegant framework to address the flavour anomalies and can be adapted to many other new-physics models. The $ \mathrm{U}(1)_X $ can emerge from a gauge-flavour unified $ \mathrm{SU}(12) \times \mathrm{SU}(2) \times \mathrm{SU}(2) $ theory at even higher energies.

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Joe Davighi, Admir Greljo, Anders Eller Thomsen. 2022-08-11. Leptoquarks with Exactly Stable Protons. https://doi.org/10.1016/j.physletb.2022.137310

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