Non-thermal CMSSM with a 125 GeV Higgs Academic Article uri icon

abstract

  • © 2015, The Author(s). Abstract: We study the phenomenology of the CMSSM/mSUGRA with non-thermal neutralino dark matter. Besides the standard parameters of the CMSSM we include the reheating temperature as an extra parameter. Imposing radiative electroweak symmetry breaking with a Higgs mass around 125 GeV and no dark matter overproduction, we contrast the scenario with different experimental bounds from colliders (LEP, LHC), cosmic microwave background (Planck), direct (LUX, XENON100, CDMS, IceCube) and indirect (Fermi) dark matter searches. The allowed parameter space is characterised by a Higgsino-like LSP with a mass around 300 GeV. The observed dark matter abundance can be saturated for reheating temperatures around 2GeV while larger temperatures require extra non-neutralino dark matter candidates and extend the allowed parameter space. Sfermion and gluino masses are in the few TeV region. These scenarios can be achieved in string models of sequestered supersymmetry breaking which avoid cosmological moduli problems and are compatible with gauge coupling unification. Astrophysics and particle physics experiments will fully investigate this non-thermal scenario in the near future.

published proceedings

  • Journal of High Energy Physics

altmetric score

  • 0.75

author list (cited authors)

  • Aparicio, L., Cicoli, M., Dutta, B., Krippendorf, S., Maharana, A., Muia, F., & Quevedo, F

citation count

  • 23

complete list of authors

  • Aparicio, Luis||Cicoli, Michele||Dutta, Bhaskar||Krippendorf, Sven||Maharana, Anshuman||Muia, Francesco||Quevedo, Fernando

publication date

  • May 2015