Work

Theoretical constraints on models with vectorlike fermions

Year: 2024

Type: article

Abstract: We provide a set of theoretical constraints on models in which the Standard Model field content is extended by vectorlike fermions and in some cases also by a real scalar singlet. Our approach is based on the study of electroweak vacuum stability, perturbativity of model couplings, and gauge couplings unification with the use of renormalization group equations. We show that careful analysis of these issues leads to strong constraints on the parameter space of the considered models. This, in turn, has important implications for phenomenology, as we show using examples of the double Higgs boson production, electroweak precision observables, and the electroweak phase transition. Published by the American Physical Society 2024

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.110.075029

Authors: Amit Adhikary, Marek Olechowski, Janusz Rosiek, Michał Ryczkowski

Institutions: Université de Toulon, Aix-Marseille Université, University of Warsaw

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Aix-Marseille Université, Narodowa Agencja Wymiany Akademickiej

Award: G4998514250