https://doi.org/10.1140/epjc/s10052-016-4437-6
Regular Article - Theoretical Physics
The super-GUT CMSSM revisited
1
Theoretical Physics and Cosmology Group, Department of Physics, King’s College London, Strand, London, WC2R 2LS, UK
2
Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland
3
School of Physics, KIAS, Seoul, 130-722, Korea
4
William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, 55455, USA
* e-mail: natsumi@hep-th.phys.s.u-tokyo.ac.jp
Received:
30
August
2016
Accepted:
10
October
2016
Published online:
28
October
2016
We revisit minimal supersymmetric SU(5) grand unification (GUT) models in which the soft supersymmetry-breaking parameters of the minimal supersymmetric Standard Model (MSSM) are universal at some input scale, 
, above the supersymmetric gauge-coupling unification scale, 
. As in the constrained MSSM (CMSSM), we assume that the scalar masses and gaugino masses have common values, 
and 
, respectively, at , as do the trilinear soft supersymmetry-breaking parameters 
. Going beyond previous studies of such a super-GUT CMSSM scenario, we explore the constraints imposed by the lower limit on the proton lifetime and the LHC measurement of the Higgs mass, 
. We find regions of , , and the parameters of the SU(5) superpotential that are compatible with these and other phenomenological constraints such as the density of cold dark matter, which we assume to be provided by the lightest neutralino. Typically, these allowed regions appear for and in the multi-TeV region, for suitable values of the unknown SU(5) GUT-scale phases and superpotential couplings, and with the ratio of supersymmetric Higgs vacuum expectation values 
.
© The Author(s), 2016
