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Title: The electroweak phase transition in the Inert Doublet Model

Abstract

We study the strength of a first-order electroweak phase transition in the Inert Doublet Model (IDM), where particle dark matter (DM) is comprised of the lightest neutral inert Higgs boson. We improve over previous studies in the description and treatment of the finite-temperature effective potential and of the electroweak phase transition. We focus on a set of benchmark models inspired by the key mechanisms in the IDM leading to a viable dark matter particle candidate, and illustrate how to enhance the strength of the electroweak phase transition by adjusting the masses of the yet undiscovered IDM Higgs states. We argue that across a variety of DM masses, obtaining a strong enough first-order phase transition is a generic possibility in the IDM. We find that due to direct dark matter searches and collider constraints, a sufficiently strong transition and a thermal relic density matching the universal DM abundance is possible only in the Higgs funnel regime.

Authors:
 [1];  [2];  [3];  [3]; ;  [1];  [2]
  1. Department of Physics, University of California Santa Cruz,1156 High St, Santa Cruz, CA 95064 (United States)
  2. (United States)
  3. (Canada)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22454574
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 07; Other Information: PUBLISHER-ID: JCAP07(2015)028; OAI: oai:repo.scoap3.org:11141; 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:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BENCHMARKS; DENSITY; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; PHASE TRANSFORMATIONS; RELICT RADIATION; WEINBERG-SALAM GAUGE MODEL

Citation Formats

Blinov, Nikita, Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064, Theory Department, TRIUMF,4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Department of Physics and Astronomy, University of British Columbia,Vancouver, BC V6T 1Z1, Profumo, Stefano, Stefaniak, Tim, and Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064. The electroweak phase transition in the Inert Doublet Model. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/07/028.
Blinov, Nikita, Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064, Theory Department, TRIUMF,4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Department of Physics and Astronomy, University of British Columbia,Vancouver, BC V6T 1Z1, Profumo, Stefano, Stefaniak, Tim, & Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064. The electroweak phase transition in the Inert Doublet Model. United States. doi:10.1088/1475-7516/2015/07/028.
Blinov, Nikita, Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064, Theory Department, TRIUMF,4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Department of Physics and Astronomy, University of British Columbia,Vancouver, BC V6T 1Z1, Profumo, Stefano, Stefaniak, Tim, and Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064. 2015. "The electroweak phase transition in the Inert Doublet Model". United States. doi:10.1088/1475-7516/2015/07/028.
@article{osti_22454574,
title = {The electroweak phase transition in the Inert Doublet Model},
author = {Blinov, Nikita and Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064 and Theory Department, TRIUMF,4004 Wesbrook Mall, Vancouver, BC V6T 2A3 and Department of Physics and Astronomy, University of British Columbia,Vancouver, BC V6T 1Z1 and Profumo, Stefano and Stefaniak, Tim and Santa Cruz Institute for Particle Physics,1156 High St, Santa Cruz, CA 95064},
abstractNote = {We study the strength of a first-order electroweak phase transition in the Inert Doublet Model (IDM), where particle dark matter (DM) is comprised of the lightest neutral inert Higgs boson. We improve over previous studies in the description and treatment of the finite-temperature effective potential and of the electroweak phase transition. We focus on a set of benchmark models inspired by the key mechanisms in the IDM leading to a viable dark matter particle candidate, and illustrate how to enhance the strength of the electroweak phase transition by adjusting the masses of the yet undiscovered IDM Higgs states. We argue that across a variety of DM masses, obtaining a strong enough first-order phase transition is a generic possibility in the IDM. We find that due to direct dark matter searches and collider constraints, a sufficiently strong transition and a thermal relic density matching the universal DM abundance is possible only in the Higgs funnel regime.},
doi = {10.1088/1475-7516/2015/07/028},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2015,
place = {United States},
year = 2015,
month = 7
}
  • We study the strength of a first-order electroweak phase transition in the Inert Doublet Model (IDM), where particle dark matter (DM) is comprised of the lightest neutral inert Higgs boson. We improve over previous studies in the description and treatment of the finite-temperature effective potential and of the electroweak phase transition. We focus on a set of benchmark models inspired by the key mechanisms in the IDM leading to a viable dark matter particle candidate, and illustrate how to enhance the strength of the electroweak phase transition by adjusting the masses of the yet undiscovered IDM Higgs states. We arguemore » that across a variety of DM masses, obtaining a strong enough first-order phase transition is a generic possibility in the IDM. We find that due to direct dark matter searches and collider constraints, a sufficiently strong transition and a thermal relic density matching the universal DM abundance is possible only in the Higgs funnel regime.« less
  • We quantitatively study the charge transport mechanism of electroweak baryogenesis in a realistic two-Higgs-doublet model, comparing the contributions from quarks and leptons reflecting from electroweak domain walls, and comparing the exact profile of the {ital CP}-violating phase with a commonly used ansatz. We note that the phenomenon of spontaneous {ital CP} violation at high temperature can occur in this model, even when there is no {ital CP} violation at zero temperature. We include all known effects which are likely to influence the baryon production rate, including strong sphalerons, the nontrivial dispersion relations of the quasiparticles in the plasma, and Debyemore » screening of gauged charges. We confirm the claim of Joyce, Prokopec, and Turok that the reflection of {tau} leptons from the wall gives the dominant effect. We conclude that this mechanism is at best marginally capable of producing the observed baryon asymmetry of the universe, and we discuss some ways in which it might be enhanced. {copyright} {ital 1996 The American Physical Society.}« less
  • We reexamine the strength of the first-order phase transition in the electroweak theory supplemented by an extra Higgs doublet. The finite-temperature effective potential V{sub eff} is computed to one-loop order, including the summation of ring diagrams, to study the ratio {phi}{sub c}/T{sub c} of the Higgs field VEV to the critical temperature. We make a number of improvements over previous treatments, including a consistent treatment of Goldstone bosons in V{sub eff}, an accurate analytic approximation to V{sub eff} valid for any mass-to-temperature ratios, and use of the experimentally measured top quark mass. For two-Higgs-doublet models, we identify a significant regionmore » of parameter space where {phi}{sub c}/T{sub c} is large enough for electroweak baryogenesis, and we argue that this identification should persist even at higher orders in perturbation theory. In the case of the minimal supersymmetric standard model, our results indicate that the extra Higgs bosons have little effect on the strength of the phase transition. {copyright} {ital 1997} {ital The American Physical Society}« less
  • We study the finite-temperature electroweak phase transition of the minimal standard model within the four-dimensional SU(2) gauge-Higgs model. Monte Carlo simulations are performed for intermediate values of the Higgs boson mass in the range 50{approx_lt}M{sub H}{approx_lt}100 GeV on a lattice with the temporal size N{sub t}=2. The order of the transition is systematically examined using finite-size scaling methods. The behavior of the interface tension and the latent heat for an increasing Higgs boson mass is also investigated. Our results suggest that the first-order transition terminates around M{sub H}{approximately}80 GeV. {copyright} {ital 1997} {ital The American Physical Society}
  • Cited by 2