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Title: ℤ{sub 3} scalar singlet dark matter

Abstract

We consider the minimal scalar singlet dark matter stabilised by a ℤ{sub 3} symmetry. Due to the cubic term in the scalar potential, semi-annihilations, besides annihilations, contribute to the dark matter relic density. Unlike in the ℤ{sub 2} case, the dark matter spin independent direct detection cross section is no more linked to the annihilation cross section. We study the extrema of the potential and show that a too large cubic term would break the ℤ{sub 3} symmetry spontaneously, implying a lower bound on the direct detection cross section, and allowing the whole parameter space to be tested by XENON1T. In a small region of the parameter space the model can avoid the instability of the standard model vacuum up to the unification scale. If the semi-annihilations are large, however, new physics will be needed at TeV scale because the model becomes non-perturbative. The singlet dark matter mass cannot be lower than 53.8 GeV due to the constraint from Higgs boson decay into dark matter.

Authors:
 [1];  [2];  [3];  [4]
  1. LAPTH, Univ. de Savoie, CNRS, B.P.110, F-74941 Annecy-le-Vieux Cedex (France)
  2. Scuola Normale Superiore and INFN, Piazza dei Cavalieri 7, 56126 Pisa (Italy)
  3. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow 119992 (Russian Federation)
  4. National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn (Estonia)
Publication Date:
OSTI Identifier:
22279614
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2013; Journal Issue: 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ASTROPHYSICS; COSMOLOGY; CROSS SECTIONS; DENSITY; GEV RANGE; HIGGS BOSONS; MASS; NONLUMINOUS MATTER; POTENTIALS; SCALARS; SPIN; STANDARD MODEL; SYMMETRY; TEV RANGE

Citation Formats

Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, and Raidal, Martti. ℤ{sub 3} scalar singlet dark matter. United States: N. p., 2013. Web. doi:10.1088/1475-7516/2013/01/022.
Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, & Raidal, Martti. ℤ{sub 3} scalar singlet dark matter. United States. https://doi.org/10.1088/1475-7516/2013/01/022
Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, and Raidal, Martti. Tue . "ℤ{sub 3} scalar singlet dark matter". United States. https://doi.org/10.1088/1475-7516/2013/01/022.
@article{osti_22279614,
title = {ℤ{sub 3} scalar singlet dark matter},
author = {Bélanger, Geneviève and Kannike, Kristjan and Pukhov, Alexander and Raidal, Martti},
abstractNote = {We consider the minimal scalar singlet dark matter stabilised by a ℤ{sub 3} symmetry. Due to the cubic term in the scalar potential, semi-annihilations, besides annihilations, contribute to the dark matter relic density. Unlike in the ℤ{sub 2} case, the dark matter spin independent direct detection cross section is no more linked to the annihilation cross section. We study the extrema of the potential and show that a too large cubic term would break the ℤ{sub 3} symmetry spontaneously, implying a lower bound on the direct detection cross section, and allowing the whole parameter space to be tested by XENON1T. In a small region of the parameter space the model can avoid the instability of the standard model vacuum up to the unification scale. If the semi-annihilations are large, however, new physics will be needed at TeV scale because the model becomes non-perturbative. The singlet dark matter mass cannot be lower than 53.8 GeV due to the constraint from Higgs boson decay into dark matter.},
doi = {10.1088/1475-7516/2013/01/022},
url = {https://www.osti.gov/biblio/22279614}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 01,
volume = 2013,
place = {United States},
year = {2013},
month = {1}
}