Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3837
Título: Baryogenesis through split higgsogenesis
Autor: Davidson, Sacha
Felipe, Ricardo Gonzalez
Seroódio, Hugo
Silva, João P.
Palavras-chave: Higgs Physics
CP Violation
Data: 12-Nov-2013
Editora: Springer
Citação: DAVIDSON, Sacha; [et al] - Baryogenesis through split Higgsogenesis. Journal of High Energy Physics. Nr. 11 (2013).
Relatório da Série N.º: ;100
Resumo: We study the cosmological evolution of asymmetries in the two-Higgs doublet extension of the Standard Model, prior to the electroweak phase transition. If Higgs flavour-exchanging interactions are sufficiently slow, then a relative asymmetry among the Higgs doublets corresponds to an effectively conserved quantum number. Since the magnitude of the Higgs couplings depends on the choice of basis in the :Higgs doublet space, we attempt to formulate basis-independent out-of-equilibrium conditions. We show that an initial asymmetry between the fliggs scalars, which could be generated by GP violation in the :Higgs sector, will be transformed into a baryon asymmetry by the sphalerons, without the need of B - L violation. This novel mechanism of baryogenesis through (split) Higgsogenesis is exemplified with simple scenarios based on the out-of-equilibrium decay of heavy singlet scalar fields into the illiggs doublets.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3837
DOI: 10.1007/JHEP11(2013)100
ISSN: 1029-8479
Versão do Editor: http://link.springer.com/article/10.1007%2FJHEP11(2013)100
Aparece nas colecções:ISEL - Física - Artigos

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