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Title: Minimal semi-annihilating Z{sub N} scalar dark matter

We study the dark matter from an inert doublet and a complex scalar singlet stabilized by Z{sub N} symmetries. This field content is the minimal one that allows dimensionless semi-annihilation couplings for N > 2. We consider explicitly the Z{sub 3} and Z{sub 4} cases and take into account constraints from perturbativity, unitarity, vacuum stability, necessity for the electroweak Z{sub N} preserving vacuum to be the global minimum, electroweak precision tests, upper limits from direct detection and properties of the Higgs boson. Co-annihilation and semi-annihilation of dark sector particles as well as dark matter conversion significantly modify the cosmic abundance and direct detection phenomenology.
Authors:
 [1] ; ;  [2] ;  [3]
  1. LAPTH, Université de Savoie, CNRS, B.P.110, Annecy-le-Vieux Cedex, F-74941 France (France)
  2. National Institute of Chemical Physics and Biophysics, Rävala 10, Tallinn (Estonia)
  3. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119991 (Russian Federation)
Publication Date:
OSTI Identifier:
22373538
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABUNDANCE; ACCURACY; ANNIHILATION; CONVERSION; DETECTION; HIGGS BOSONS; NONLUMINOUS MATTER; SCALARS; UNITARITY