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Title: Supersymmetric Dark Matter after LHC Run 1

Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, χ ~0 1, assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau τ ~ 1, stop t ~ 1 or chargino χ 1, resonant annihilation via direct-channel heavy Higgs bosons H / A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces in MSSM scenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the τ~1 coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for /E T events and long-lived charged particles, whereas theirH / A funnel, focus-point and χ 1 coannihilation regions can largely be explored by the LZ and Darwinmore » DM direct detection experiments. Furthermore, we find that the dominant DM mechanism in our pMSSM10 analysis is χ ~ ±1 coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.« less
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [2] ;  [10] ;  [11] ;  [12] ;  [2] ;  [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Imperial College, London (United Kingdom)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Illinois, Chicago, IL (United States)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Antwerp Univ., Wilrijk (Belgium)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Melbourne, Parksville (Australia)
  6. European Organization for Nuclear Research (CERN), Geneva (Switzerland); King's College London (United Kingdom)
  7. Univ. of Bristol, Bristol (United Kingdom)
  8. Instituto de Fisica de Cantabria, Santander (Spain)
  9. Univ. of Zurich, Zurich (Switzerland)
  10. Universidade de Santiago de Compostela, Santiago de Compostela (Spain)
  11. Univ. of Minnesota, Minneapolis, MN (United States)
  12. King's College London, London (United Kingdom)
Publication Date:
OSTI Identifier:
Report Number(s):
FERMILAB-PUB-15-333-CMS; CERN-PH-TH-2015-167; DESY-15-132; LCTS-2015-24; FTPI-MINN-15-36; SLAC-PUB-16350; UMN-TH-3445-15
Journal ID: ISSN 1434-6052; arXiv eprint number arXiv:1508.01173
Grant/Contract Number:
AC02-07CH11359; AC02-76SF00515
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields (Online)
Additional Journal Information:
Journal Name: European Physical Journal. C, Particles and Fields (Online); Journal Volume: 75; Journal Issue: 10; Journal ID: ISSN 1434-6052
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); High Energy Physics (HEP)
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; Astrophysics, Experiment-HEP, Phenomenology-HEP, Theory-HEP,HEPPH