Baryogenesis via elementary Goldstone Higgs relaxation

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Physical Review D, ISSN: 2470-0029, Vol: 93, Issue: 11

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Gertov, Helene; Pearce, Lauren; Sannino, Francesco; Yang, Louis
American Physical Society (APS)
Physics and Astronomy; High Energy Physics - Phenomenology; Astrophysics - Cosmology and Nongalactic Astrophysics
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article description
We extend the relaxation mechanism to the elementary Goldstone Higgs framework. Besides studying the allowed parameter space of the theory, we add the minimal ingredients needed for the framework to be phenomenologically viable. The very nature of the extended Higgs sector allows to consider very flat scalar potential directions along which the relaxation mechanism can be implemented. This fact translates into wider regions of applicability of the relaxation mechanism when compared to the Standard Model Higgs case. Our results show that if the electroweak scale is not fundamental but radiatively generated it is possible to generate the observed matter-antimatter asymmetry via the relaxation mechanism.