Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2851
Título: Metastability bounds on the two Higgs doublet model
Autor: Barroso, A.
Ferreira, P. M.
Ivanov, I. P.
Santos, Rui
Palavras-chave: Spontaneous symmetry breaking
Scattering amplitudes
Weak interactions
Neutral currents
Electroweak fit
Standard model
Boson mass
Data: Jun-2013
Editora: Springer
Citação: BARROSO, A.; FERREIRA, P. M.; IVANOV, I. P.; SANTOS, Rui - Metastability bounds on the two Higgs doublet model. Journal of High Energy Physics. ISSN 1029-8479. Nr. 6 (2013).
Resumo: In the two Higgs doublet model, there is the possibility that the vacuum where the universe resides in is metastable. We present the tree-level bounds on the scalar potential parameters which have to be obeyed to prevent that situation. Analytical expressions for those bounds are shown for the most used potential, that with a softly broken Z(2) symmetry. The impact of those bounds on the model's phenomenology is discussed in detail, as well as the importance of the current LHC results in determining whether the vacuum we live in is or is not stable. We demonstrate how the vacuum stability bounds can be obtained for the most generic CP-conserving potential, and provide a simple method to implement them.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2851
ISSN: 1029-8479
Aparece nas colecções:ISEL - Física - Artigos

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