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Title: Baryogenesis in the two doublet and inert singlet extension of the Standard Model

Abstract

We investigate an extension of the Standard Model containing two Higgs doublets and a singlet scalar field (2HDSM). We show that the model can have a strongly first-order phase transition and give rise to the observed baryon asymmetry of the Universe, consistent with all experimental constraints. In particular, the constraints from the electron and neutron electric dipole moments are less constraining here than in pure two-Higgs-doublet model (2HDM). The two-step, first-order transition in 2HDSM, induced by the singlet field, may lead to strong supercooling and low nucleation temperatures in comparison with the critical temperature, T{sub n}≪T{sub c}, which can significantly alter the usual phase-transition pattern in 2HD models with T{sub n}≈T{sub c}. Furthermore, the singlet field can be the dark matter particle. However, in models with a strong first-order transition its abundance is typically but a thousandth of the observed dark matter abundance.

Authors:
 [1];  [2];  [3];  [4];  [3];  [2];  [3]
  1. CP"3-Origins, University of Southern Denmark,Campusvej 55, DK-5230 Odense M (Denmark)
  2. Department of Physics, University of Jyväskylä,P.O. Box 35 (YFL), FI-40014 Jyväskylä (Finland)
  3. (Finland)
  4. Department of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki (Finland)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572139
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 08; Other Information: PUBLISHER-ID: JCAP08(2016)057; OAI: oai:repo.scoap3.org:16916; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BARYONS; CRITICAL TEMPERATURE; ELECTRIC DIPOLE MOMENTS; HIGGS MODEL; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; SCALAR FIELDS; STANDARD MODEL; UNIVERSE

Citation Formats

Alanne, Tommi, Kainulainen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Tuominen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Vaskonen, Ville, and Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki. Baryogenesis in the two doublet and inert singlet extension of the Standard Model. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/08/057.
Alanne, Tommi, Kainulainen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Tuominen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Vaskonen, Ville, & Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki. Baryogenesis in the two doublet and inert singlet extension of the Standard Model. United States. doi:10.1088/1475-7516/2016/08/057.
Alanne, Tommi, Kainulainen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Tuominen, Kimmo, Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki, Vaskonen, Ville, and Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki. Thu . "Baryogenesis in the two doublet and inert singlet extension of the Standard Model". United States. doi:10.1088/1475-7516/2016/08/057.
@article{osti_22572139,
title = {Baryogenesis in the two doublet and inert singlet extension of the Standard Model},
author = {Alanne, Tommi and Kainulainen, Kimmo and Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki and Tuominen, Kimmo and Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki and Vaskonen, Ville and Helsinki Institute of Physics, University of Helsinki,P.O. Box 64, FI-00014 Helsinki},
abstractNote = {We investigate an extension of the Standard Model containing two Higgs doublets and a singlet scalar field (2HDSM). We show that the model can have a strongly first-order phase transition and give rise to the observed baryon asymmetry of the Universe, consistent with all experimental constraints. In particular, the constraints from the electron and neutron electric dipole moments are less constraining here than in pure two-Higgs-doublet model (2HDM). The two-step, first-order transition in 2HDSM, induced by the singlet field, may lead to strong supercooling and low nucleation temperatures in comparison with the critical temperature, T{sub n}≪T{sub c}, which can significantly alter the usual phase-transition pattern in 2HD models with T{sub n}≈T{sub c}. Furthermore, the singlet field can be the dark matter particle. However, in models with a strong first-order transition its abundance is typically but a thousandth of the observed dark matter abundance.},
doi = {10.1088/1475-7516/2016/08/057},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 08,
volume = 2016,
place = {United States},
year = {Thu Aug 25 00:00:00 EDT 2016},
month = {Thu Aug 25 00:00:00 EDT 2016}
}