Title
The NUHM2 after LHC Run 1 The NUHM2 after LHC Run 1
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Berlin ,
Subject
Physics
Source (journal)
European physical journal : C : particles and fields. - Berlin
Volume/pages
74(2014) :12 , 16 p.
ISSN
1434-6044
1434-6044
Article Reference
3212
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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(Hu,d)(2), vary independently from the universal soft SUSY-breaking contributions m(0)(2) to the masses of squarks and sleptons. Our analysis uses the MultiNest sampling algorithm with over 4 x 10(8) 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) over bar (T) signals using the full LHC Run 1 data, the measurements of BR(B-s -> 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 at the GUT scale for squarks and sleptons, m(0)(2)< 0, as well as m(Hu)(2) < m(Hd)(2) < 0. The tension present in the CMSSM and NUHM1 between the supersymmetric interpretation of (g - 2)(mu) and the absence to date of SUSY at the LHC is not significantly alleviated in the NUHM2. We find that the minimum chi(2) = 32.5 with 21 degrees of freedom (dof) in the NUHM2, to be compared with chi(2)/dof = 35.0/23 in the CMSSM, and chi(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.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/cf1624/122832.pdf
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