Mixed sneutrino dark matter in light of the 2011 XENON and LHC results

Journal Article · Sat Sep 01 04:00:00 EDT 2012 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2012/09/013· OSTI ID:22279875

Dumont, Béranger; Kraml, Sabine ^[1]; Bélanger, Geneviève ^[2]; Fichet, Sylvain ^[3]; Schwetz, Thomas ^[4]

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1. Laboratoire de Physique Subatomique et de Cosmologie, UJF Grenoble 1, CNRS/IN2P3, INPG, 53 Avenue des Martyrs, F-38026 Grenoble (France)
2. LAPTH, Univ. de Savoie, CNRS, B.P. 110, F-74941 Annecy-le-Vieux (France)
3. International Institute of Physics, UFRN, Av. Odilon Gomes de Lima, 1722, Capim Macio 59078-400, Natal-RN (Brazil)
4. Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)

In the context of supersymmetric models in which small Dirac neutrino masses are generated by supersymmetry breaking, a mainly right-handed (RH) mixed sneutrino can be an excellent cold dark matter (DM) candidate. We perform a global analysis of the Minimal Supersymmetric Standard Model (MSSM)+RH neutrino parameter space by means of Markov Chain Monte Carlo sampling. We include all relevant constraints from collider and dark matter searches, paying particular attention to nuclear and astrophysical uncertainties. Two distinct cases can satisfy all constraints: heavy sneutrino DM with mass of order 100 GeV, as well as light sneutrino DM with mass of about 3–6 GeV. We discuss the implications for direct and indirect dark matter searches, as well as for SUSY and Higgs searches at the LHC for both, the light and the heavy sneutrino dark matter case. The light sneutrino case is excluded by the 125–126 GeV Higgs signal.

• OSTI ID: 22279875
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 09 Vol. 2012; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
CERN LHC
COSMOLOGY
GEV RANGE
HIGGS BOSONS
HIGGS MODEL
MARKOV PROCESS
MONTE CARLO METHOD
NEUTRINOS
NONLUMINOUS MATTER
PARTICLE IDENTIFICATION
REST MASS
SPACE
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY BREAKING