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Eibun Senaha
순수물리이론 연구단
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Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations Highly Cited Paper

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Title
Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations
Author(s)
Cheng-Wei Chiang; Michael J. Ramsey-Musolf; Eibun Senaha
Publication Date
2018-01
Journal
PHYSICAL REVIEW D, v.97, no.1, pp.015005 -
Publisher
American Physical Society
Abstract
We analyze the theoretical and phenomenological considerations for the electroweak phase transition and dark matter in an extension of the standard model with a complex scalar singlet (cxSM). In contrast with earlier studies, we use a renormalization group improved scalar potential and treat its thermal history in a gauge-invariant manner. We find that the parameter space consistent with a strong first-order electroweak phase transition (SFOEWPT) and present dark matter phenomenological constraints is significantly restricted compared to results of a conventional, gauge-noninvariant analysis. In the simplest variant of the cxSM, recent LUX data and a SFOEWPT require a dark matter mass close to half the mass of the standard model-like Higgs boson. We also comment on various caveats regarding the perturbative treatment of the phase transition dynamics
URI
http://pr.ibs.re.kr/handle/8788114/4695
DOI
10.1103/PhysRevD.97.015005
ISSN
2470-0010
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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