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

Journal Article · Sun Jun 01 00:00:00 EDT 2014 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2014/06/021· OSTI ID:22373538

Bélanger, Geneviève ^[1]; Kannike, Kristjan; Raidal, Martti ^[2]; Pukhov, Alexander ^[3]

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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)

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.

• OSTI ID: 22373538
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 06; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABUNDANCE
ACCURACY
ANNIHILATION
CONVERSION
DETECTION
HIGGS BOSONS
NONLUMINOUS MATTER
SCALARS
UNITARITY