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Title: Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations

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. As a result, we also comment on various caveats regarding the perturbative treatment of the phase transition dynamics.

Authors:
; ;
Publication Date:
Research Org.:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1416061
Alternate Identifier(s):
OSTI ID: 1501452
Grant/Contract Number:  
SC0011095
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Chiang, Cheng-Wei, Ramsey-Musolf, Michael J., and Senaha, Eibun. Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.015005.
Chiang, Cheng-Wei, Ramsey-Musolf, Michael J., & Senaha, Eibun. Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations. United States. doi:10.1103/PhysRevD.97.015005.
Chiang, Cheng-Wei, Ramsey-Musolf, Michael J., and Senaha, Eibun. Mon . "Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations". United States. doi:10.1103/PhysRevD.97.015005.
@article{osti_1416061,
title = {Standard model with a complex scalar singlet: Cosmological implications and theoretical considerations},
author = {Chiang, Cheng-Wei and Ramsey-Musolf, Michael J. and Senaha, Eibun},
abstractNote = {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. As a result, we also comment on various caveats regarding the perturbative treatment of the phase transition dynamics.},
doi = {10.1103/PhysRevD.97.015005},
journal = {Physical Review D},
number = 1,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.97.015005

Citation Metrics:
Cited by: 12 works
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    Works referencing / citing this record:

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