English

The NUHM2 after LHC Run 1

High Energy Physics - Phenomenology 2014-08-19 v1 High Energy Physics - Experiment

Abstract

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, mHu,d2m^2_{H_{u,d}}, vary independently from the universal soft SUSY-breaking contributions m02m^2_0 to the masses of squarks and sleptons. Our analysis uses the MultiNest sampling algorithm with over 4×1084 \times 10^8 points to sample the NUHM2 parameter space. It includes the ATLAS and CMS Higgs mass measurements as well as their searches for supersymmetric jets + MET signals using the full LHC Run~1 data, the measurements of Bsμ+μB_s \to \mu^+ \mu^- 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 for squarks and sleptons, m02<0m_0^2 < 0, as well as mHu2<mHd2<0m^2_{H_u} < m^2_{H_d} < 0. The tension present in the CMSSM and NUHM1 between the supersymmetric interpretation of gμ2g_\mu - 2 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\chi^2 = 32.5 with 21 degrees of freedom (dof) in the NUHM2, to be compared with χ2/dof=35.0/23\chi^2/{\rm dof} = 35.0/23 in the CMSSM, and χ2/dof=32.7/22\chi^2/{\rm 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.

Keywords

Cite

@article{arxiv.1408.4060,
  title  = {The NUHM2 after LHC Run 1},
  author = {O. Buchmueller and R. Cavanaugh and M. Citron and A. De Roeck and M. J. Dolan and J. R. Ellis and H. Flaecher and S. Heinemeyer and S. Malik and J. Marrouche and D. Martinez Santos and K. A. Olive and K. J. De Vries and G. Weiglein},
  journal= {arXiv preprint arXiv:1408.4060},
  year   = {2014}
}

Comments

20 pages latex, 13 figures

R2 v1 2026-06-22T05:32:19.055Z