Scalar representations in the light of electroweak phase transition and cold dark matter phenomenology

The extension of the standard model's minimal Higgs sector with an inert SU(2) sub()L scalar doublet can provide light dark matter candidate and simultaneously induce a strong phase transition for explaining Baryogenesis. There is however no symmetry reasons to prevent the extension using scala...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2014-05, Vol.2014 (5), p.i-31
Main Authors: AbdusSalam, Shehu S, Chowdhury, Talal Ahmed
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Cold dark matter
COMPARATIVE EVALUATIONS
Cosmology
Dark matter
HIGGS MODEL
Inert
Mathematical models
NONLUMINOUS MATTER
PHASE TRANSFORMATIONS
Phenomenology
Representations
Scalars
STANDARD MODEL
SYMMETRY
TEV RANGE
TRIPLETS
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Summary:The extension of the standard model's minimal Higgs sector with an inert SU(2) sub()L scalar doublet can provide light dark matter candidate and simultaneously induce a strong phase transition for explaining Baryogenesis. There is however no symmetry reasons to prevent the extension using scalars with higher SU(2) sub()L representations. By making random scans over the models' parameters, we show that in the light of electroweak physics constraints, strong first order electroweak phase transition and the possibility of having sub-TeV cold dark matter candidate the higher representations arc rather disfavored compared to the inert doublet. This is done by computing generic perturbativity behavior and impact on electroweak phase transitions of higher representations in comparison with the inert doublet model. Explicit phase transition and cold dark matter phenomenology within the context of the inert triplet and quartet representations arc used for detailed illustrations.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2014/05/026