The NUHM2 after LHC Run 1
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Author(s)
Type
Journal Article
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, 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 + /ET 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, 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 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.
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 + /ET 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, 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 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.
Date Issued
2014-12-17
Date Acceptance
2014-12-01
Citation
European Physical Journal C, 2014, 74 (12)
ISSN
1434-6052
Publisher
Springer Verlag
Journal / Book Title
European Physical Journal C
Volume
74
Issue
12
Copyright Statement
© The Author(s) 2014. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
License URL
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
NEUTRALINO DARK-MATTER
MINIMAL FLAVOR VIOLATION
LARGE TAN-BETA
NONUNIVERSAL HIGGS MASSES
RELIC DENSITY
MUON G-2
SUPERSYMMETRIC MODELS
SUPERPARTNER MASSES
STAU COANNIHILATION
COUPLING-CONSTANTS
Nuclear & Particles Physics
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Publication Status
Published
Article Number
3212