Likelihood analysis of supersymmetric SU(5) GUTs.
Eur Phys J C Part Fields
; 77(2): 104, 2017.
Article
in En
| MEDLINE
| ID: mdl-28260982
ABSTRACT
We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter space of the models studied has seven parameters a universal gaugino mass [Formula see text], distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), [Formula see text] and [Formula see text], and for the [Formula see text] and [Formula see text] Higgs representations [Formula see text] and [Formula see text], a universal trilinear soft SUSY-breaking parameter [Formula see text], and the ratio of Higgs vevs [Formula see text]. In addition to previous constraints from direct sparticle searches, low-energy and flavour observables, we incorporate constraints based on preliminary results from 13 TeV LHC searches for jets + [Formula see text] events and long-lived particles, as well as the latest PandaX-II and LUX searches for direct Dark Matter detection. In addition to previously identified mechanisms for bringing the supersymmetric relic density into the range allowed by cosmology, we identify a novel [Formula see text] coannihilation mechanism that appears in the supersymmetric SU(5) GUT model and discuss the role of [Formula see text] coannihilation. We find complementarity between the prospects for direct Dark Matter detection and SUSY searches at the LHC.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Eur Phys J C Part Fields
Year:
2017
Document type:
Article
Affiliation country:
Germany