The NUHM2 after LHC Run 1

O. Buchmueller, R. Cavanaugh, M. Citron, A. De Roeck, M. J. Dolan, J. R. Ellis, H. Flaecher, S. Heinemeyer, S. Malik, J. Marrouche, D. Martinez Santos, K. A. Olive, K. J. De Vries, G. Weiglein

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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, m2 Hu,d , vary independently from the universal soft SUSY-breaking contributions m2 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(Bs → 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, m2 0 < 0, as well as m2 Hu < m2 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 find that the minimum χ2 = 32.5 with 21 degrees of freedom (dof) in the NUHM2, to be compared with χ2/dof = 35.0/23 in the CMSSM, and χ2/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.
Original languageEnglish
Article number3212
Number of pages16
JournalEuropean Physical Journal C: Particles and Fields
Publication statusPublished - 17 Dec 2014

Bibliographical note

20 pages latex, 13 figures


  • hep-ph
  • hep-ex


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