Likelihood Analysis of Supersymmetric SU(5) GUTs

Bagnaschi, E.; Sakurai, K.; Lucio, M.; Cavanaugh, R.; Olive, K. A.; Isidori, G.; de Vries, K. J.; Ellis, J. R.; Buchmueller, O.; Martínez Santos, D.; Borsato, M.; De Roeck, A.; Dolan, M. J.; Richards, A.; Weiglein, G.; Chobanova, V.; Citron, M.; Costa, J. C.; Heinemeyer, S.; Flächer, H.

Report

PUBDB-2016-04665

Likelihood Analysis of Supersymmetric SU(5) GUTs

Bagnaschi, E. (Corresponding author)DESY* ; Costa, J. C. ; Sakurai, K.DESY* ; Borsato, M. ; Buchmueller, O. ; Cavanaugh, R. ; Chobanova, V. ; Citron, M. ; De Roeck, A. ; Dolan, M. J. ; Ellis, J. R. ; Flächer, H. ; Heinemeyer, S. ; Isidori, G. ; Lucio, M.Extern* ; Martínez Santos, D. ; Olive, K. A. ; Richards, A. ; de Vries, K. J. ; Weiglein, G.DESY*

2016

37 pp. (2016)

This record in other databases:

Report No.: CERN-PH-TH-2016-217; DESY-16-156; FERMILAB-PUB-16-453-CMS; FTPI-MINN-16-29; IIFT-UAM-CSIC-16-105; IPPP-16-97; KCL-PH-TH-2016-57; UMN-TH-3609-16; arXiv:1610.10084

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 7 parameters: a universal gaugino mass $m_{1/2}$, distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), $m_5$ and $m_{10}$, and for the $\mathbf{5}$ and $\mathbf{\bar 5}$ Higgs representations $m_{H_u}$ and $m_{H_d}$, a universal trilinear soft SUSY-breaking parameter $A_0$, and the ratio of Higgs vevs $\tan \beta$. 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 + MET 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 ${\tilde u_R}/{\tilde c_R} - \tilde{\chi}^0_1$ coannihilation mechanism that appears in the supersymmetric SU(5) GUT model and discuss the role of ${\tilde \nu_\tau}$ coannihilation. We find complementarity between the prospects for direct Dark Matter detection and SUSY searches at the LHC.

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