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Title: Beyond the CMSSM without an accelerator: Proton decay and direct dark matter detection

Here, we consider two potential non-accelerator signatures of generalizations of the well-studied constrained minimal supersymmetric standard model (CMSSM). In one generalization, the universality constraints on soft supersymmetry-breaking parameters are applied at some input scale M inbelow the grand unification (GUT) scale M GUT, a scenario referred to as ‘sub-GUT’. The other generalization we consider is to retain GUT-scale universality for the squark and slepton masses, but to relax universality for the soft supersymmetry-breaking contributions to the masses of the Higgs doublets. As with other CMSSM-like models, the measured Higgs mass requires supersymmetric particle masses near or beyond the TeV scale. Because of these rather heavy sparticle masses, the embedding of these CMSSM-like models in a minimal SU(5) model of grand unification can yield a proton lifetime consistent with current experimental limits, and may be accessible in existing and future proton decay experiments. Another possible signature of these CMSSM-like models is direct detection of supersymmetric dark matter. The direct dark matter scattering rate is typically below the reach of the LUX-ZEPLIN (LZ) experiment if M in is close to M GUT, but it may lie within its reach if M in≲10 11 GeV. Likewise, generalizing the CMSSM to allow non-universal supersymmetry-breakingmore » contributions to the Higgs offers extensive possibilities for models within reach of the LZ experiment that have long proton lifetimes.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5]
  1. King's College London, London (United Kingdom); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  2. Univ. of Minnesota, Minneapolis, MN (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  4. Univ. of Minnesota, Minneapolis, MN (United States); Univ. of Tokyo, Chiba (Japan)
  5. Univ. of Utah, Salt Lake City, UT (United States)
Publication Date:
Grant/Contract Number:
SC0011842
Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 1; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1360125