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Title: Impact of semi-annihilations on dark matter phenomenology. An example of Z{sub N} symmetric scalar dark matter

Abstract

We study the impact of semi-annihilations x{sub i}x{sub j}↔x{sub k}X and dark matter conversion x{sub i}x{sub j}↔x{sub k}x{sub l}, where x{sub i} is any dark matter and X is any standard model particle, on dark matter phenomenology. We formulate minimal scalar dark matter models with an extra doublet and a complex singlet that predict non-trivial dark matter phenomenology with semi-annihilation processes for different discrete Abelian symmetries Z{sub N}, N > 2. We implement two such example models with Z{sub 3} and Z{sub 4} symmetry in micrOMEGAs and work out their phenomenology. We show that both semi-annihilations and dark matter conversion significantly modify the dark matter relic abundance in this type of models. In the Z{sub 4} model, there are two stable neutral particles and therefore multi-component dark matter. We also study the possibility of dark matter direct detection in XENON100 in those models.

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:
22279772
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2012; Journal Issue: 04; 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; COSMOLOGICAL MODELS; COSMOLOGY; NEUTRAL PARTICLES; NONLUMINOUS MATTER; PARTICLE IDENTIFICATION; SCALARS; STANDARD MODEL; SYMMETRY

Citation Formats

Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, and Raidal, Martti. Impact of semi-annihilations on dark matter phenomenology. An example of Z{sub N} symmetric scalar dark matter. United States: N. p., 2012. Web. doi:10.1088/1475-7516/2012/04/010.
Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, & Raidal, Martti. Impact of semi-annihilations on dark matter phenomenology. An example of Z{sub N} symmetric scalar dark matter. United States. https://doi.org/10.1088/1475-7516/2012/04/010
Bélanger, Geneviève, Kannike, Kristjan, Pukhov, Alexander, and Raidal, Martti. Sun . "Impact of semi-annihilations on dark matter phenomenology. An example of Z{sub N} symmetric scalar dark matter". United States. https://doi.org/10.1088/1475-7516/2012/04/010.
@article{osti_22279772,
title = {Impact of semi-annihilations on dark matter phenomenology. An example of Z{sub N} symmetric scalar dark matter},
author = {Bélanger, Geneviève and Kannike, Kristjan and Pukhov, Alexander and Raidal, Martti},
abstractNote = {We study the impact of semi-annihilations x{sub i}x{sub j}↔x{sub k}X and dark matter conversion x{sub i}x{sub j}↔x{sub k}x{sub l}, where x{sub i} is any dark matter and X is any standard model particle, on dark matter phenomenology. We formulate minimal scalar dark matter models with an extra doublet and a complex singlet that predict non-trivial dark matter phenomenology with semi-annihilation processes for different discrete Abelian symmetries Z{sub N}, N > 2. We implement two such example models with Z{sub 3} and Z{sub 4} symmetry in micrOMEGAs and work out their phenomenology. We show that both semi-annihilations and dark matter conversion significantly modify the dark matter relic abundance in this type of models. In the Z{sub 4} model, there are two stable neutral particles and therefore multi-component dark matter. We also study the possibility of dark matter direct detection in XENON100 in those models.},
doi = {10.1088/1475-7516/2012/04/010},
url = {https://www.osti.gov/biblio/22279772}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 04,
volume = 2012,
place = {United States},
year = {2012},
month = {4}
}