Article Dans Une Revue Journal of High Energy Physics Année : 2025

A Cosmological Solution to the Doublet-Triplet Splitting Problem

Résumé

We propose a model that provides a simultaneous solution to the doublet-triplet splitting problem of grand unified theories, the electroweak hierarchy problem and the strong CP problem. The mechanism is based on the dynamics of two axion-like particles that would crunch the universe at the time of the QCD phase transition if triplets were light or had a VEV or if doublets were heavy or did not have a VEV. The only trace left at low energies are these two axion-like particles. They are weakly coupled to the Standard Model and could be detected at upcoming axion experiments or by a combination of neutron EDM measurements and the astrophysical detection of fuzzy dark matter.

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hal-04795819 , version 1 (28-04-2025)

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Csaba Csaki, Raffaele Tito d'Agnolo, Eric Kuflik, Pablo Sesma. A Cosmological Solution to the Doublet-Triplet Splitting Problem. Journal of High Energy Physics, 2025, 2025 (02), pp.048. ⟨10.1007/JHEP02(2025)048⟩. ⟨hal-04795819⟩
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