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Title: Likelihood analysis of supersymmetric SU(5) GUTs

Here, 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.
Authors:
ORCiD logo [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [4] ;  [2] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [4] ;  [4] ;  [12] ;  [2] ;  [2] ;  [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Imperial College, London (United Kingdom)
  3. Univ. of Durham, Durham (United Kingdom); Univ. of Warsaw, Warsaw (Poland)
  4. Univ. de Santiago de Compostela, Santiago de Compostela (Spain)
  5. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Illinois, Chicago, IL (United States)
  6. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Antwerp Univ., Wilrijk (Belgium)
  7. Univ. of Melbourne (Australia)
  8. King's College London, London (United Kingdom); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  9. Univ. of Bristol, Bristol (United Kingdom)
  10. Campus of International Excellence UAM+CSIC, Madrid (Spain); Instituto de Fisica Teorica UAM-CSIC, Madrid (Spain); Instituto de Fisica de Cantabria (CSIC-UC), Santander (Spain)
  11. Univ. Zurich, Zurich (Switzerland)
  12. Univ. of Minnesota, Minneapolis, MN (United States)
Publication Date:
Report Number(s):
CERN-PH-TH-2016-217; KCL-PH-TH-2016-57; CERN-TH-2016-217; DESY-16-156; IIFT-UAM-CSIC-16-105; FTPI-MINN-16-29; UMN-TH-3609-16; IPPP-16-97; FERMILAB-PUB-16-453-CMS; arXiv:1610.10084
Journal ID: ISSN 1434-6044; 1495211; TRN: US1700709
Grant/Contract Number:
AC02-07CH11359; sc0011842
Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 2; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1344018
Alternate Identifier(s):
OSTI ID: 1343970