Signal strength and W-boson mass measurements as a probe of the electro-weak phase transition at colliders -- Snowmass White Paper

2022/05/28 by Andreas Papaefstathiou, Tania Robens, Papaefstathiou, Andreas +3 · 1 citation
Physics and Astronomy · #Particle physics theoretical and experimental studies #Physics of Superconductivity and Magnetism #Cosmology and Gravitation Theories

paper · pdf · doi:10.48550/arxiv.2205.14379

Abstract

We consider an extension of the scalar sector of the Standard Model (SM) by an additional gauge singlet, which mixes with a part of the SM-like Higgs doublet. Within this model, parameter-space regions exist that can lead to a strong first-order electro-weak phase transition, a necessary condition for electro-weak baryogenesis. We discuss how such regions of the parameter space can be tested using the SM-like Higgs boson's signal strength measurements, as well as precision observables, such as e.g. the W-boson mass, at current and future colliders.

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