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Orientador(es)
Resumo(s)
We study the stability of neutral electroweak vacua in two Higgs doublet models, and calculate the lifetime of these states when the parameters are such that they are false vacua. As the two Higgs doublet model is invariant under a sign change of both doublets, degenerate true vacua exist. It is shown that this degeneracy, despite the fact that each of these minima locally describes the same physics, can immensely affect their lifetime. We apply these calculations to the parameter space of the models which is allowed by recent LHC searches, and infer combinations of parameters which should be excluded on grounds of a tunneling time inferior to the age of the universe.
Descrição
Palavras-chave
Beyond Standard Model Higgs Physics
Contexto Educativo
Citação
BRANCHINA, V.; CONTINO, F.; FERREIRA, P. M. – Electroweak vacuum lifetime in two Higgs doublet models. Journal of High Energy Physics. ISSN 1029-8479. N.º 11 (2018), pp. 1-37
Editora
Springer