期刊
EUROPEAN PHYSICAL JOURNAL C
卷 73, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-013-2403-0
关键词
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资金
- London Centre for Terauniverse Studies (LCTS)
- European Research Council [267352]
- DOE at the University of Minnesota [DE-FG02-94ER-40823]
- Doctoral Dissertation Fellowship at the University of Minnesota
- Center for High Performance Computing at the University of Utah
- Science and Technology Facilities Council [ST/J002798/1] Funding Source: researchfish
- STFC [ST/J002798/1] Funding Source: UKRI
The apparent discovery of a Higgs boson with mass similar to 125 GeV has had a significant impact on the constrained minimal supersymmetric extension of the Standard Model (the CMSSM). Much of the low-mass parameter space in the CMSSM has been excluded by supersymmetric particle searches at the LHC as well as by the Higgs mass measurement and the emergent signal for B-s -> mu(+) mu(-). Here, we consider the impact of these recent LHC results on several variants of the CMSSM with a primary focus on obtaining a Higgs mass of similar to 125 GeV. In particular, we consider the one-and two-parameter extensions of the CMSSM with one or both of the Higgs masses set independently of the common sfermion mass, m(0) (the NUHM1,2). We also consider the one-parameter extension of the CMSSM in which the input universality scale M-in is below the GUT scale (the sub-GUT CMSSM). Finally, we reconsider mSUGRA models with sub-GUT universality, which have the same number of parameters as the CMSSM. We find that when M-in < M-GUT large regions of parameter space open up where the relic density of neutralinos can successfully account for dark matter with a Higgs boson mass similar to 125 GeV. Interestingly, we find that the preferred range of the A-term in sub-GUT mSUGRA models straddles that predicted by the simplest Polonyi model.
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