Singlets and the Electroweak Phase Transition
S.J. Huber
TL;DR
This paper investigates how singlet extensions of the Standard Model, particularly the NMSSM, can facilitate a strongly first order electroweak phase transition, supporting electroweak baryogenesis within a broad parameter space.
Contribution
It provides a systematic method to analyze the NMSSM parameter space and demonstrates its viability for electroweak baryogenesis with Higgs masses up to 115 GeV.
Findings
NMSSM supports strong first order phase transition
Electroweak baryogenesis viable in wide parameter range
Higgs mass can reach at least 115 GeV
Abstract
Singlet extensions of the Standard Model (SM) allow for a strongly first order electroweak phase transition, because of trilinear terms in the tree-level potential. We present a systematic procedure to study the parameter space of the Next-to-Minimal Supersymmetric SM (NMSSM). We find that this model is consistent with electroweak baryogenesis for a wide range of parameters, allowing Higgs masses up to at least 115 GeV.
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Taxonomy
TopicsComputational Physics and Python Applications · Particle physics theoretical and experimental studies · Cosmology and Gravitation Theories