skip to main content


Title: The NUHM2 after LHC Run 1

We make a frequentist analysis of the parameter space of the NUHM2, in which the soft supersymmetry (SUSY)-breaking contributions to the masses of the two Higgs multiplets, m 2 Hu,d, vary independently from the universal soft SUSY-breaking contributions m 2 0 to the masses of squarks and sleptons. Our analysis uses the MultiNest sampling algorithm with over 4 × 10⁸ points to sample the NUHM2 parameter space. It includes the ATLAS and CMS Higgs mass measurements as well as the ATLAS search for supersymmetric jets + /E T signals using the full LHC Run 1 data, the measurements of BR(B s→μ⁺μ⁻) by LHCb and CMS together with other B-physics observables, electroweak precision observables and the XENON100 and LUX searches for spin-independent dark-matter scattering. We find that the preferred regions of the NUHM2 parameter space have negative SUSY-breaking scalar masses squared at the GUT scale for squarks and sleptons, m 2 0 < 0, as well as m 2 Hu < m 2 Hd < 0. The tension present in the CMSSM and NUHM1 between the supersymmetric interpretation of (g – 2)μ and the absence to date of SUSY at the LHC is not significantly alleviated in the NUHM2. We findmore » that the minimum χ 2 = 32.5 with 21 degrees of freedom (dof) in the NUHM2, to be compared with χ 2/dof = 35.0/23 in the CMSSM, and χ 2/dof = 32.7/22 in the NUHM1. We find that the one-dimensional likelihood functions for sparticle masses and other observables are similar to those found previously in the CMSSM and NUHM1.« less
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [1] ;  [8] ;  [9] ;  [10] ;  [1] ;  [11]
  1. Imperial College, London (United Kingdom)
  2. Fermi National Accelerator Laboratory, Batavia, IL (United States); Univ. of Illinois at Chicago, Chicago, IL (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Antwerp Univ., Wilrijk (Belgium)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. European Organization for Nuclear Research (CERN), Geneva (Switzerland); King's College London, London (United Kingdom)
  6. Univ. of Bristol, Bristol (United Kingdom)
  7. Instituto de Fisica de Cantabria, Santander (Spain)
  8. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  9. NIKHEF and VU Univ., Amsterdam (The Netherlands)
  10. Univ. of Minnesota, Minneapolis, MN (United States)
  11. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 74; Journal Issue: 12; Journal ID: ISSN 1434-6044
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
OSTI Identifier: