Implications of a 125 GeV Higgs for supersymmetric models

By A. Arbey, M. Battaglia, Abdelhak Djouadi, Farvah Mahmoudi, J. Quevillon. 2011

405 citations recorded by the source corpus.

Abstract Preliminary results of the search for a Standard Model like Higgs boson at the LHC with 5 fb−1 data have just been presented by the ATLAS and CMS Collaborations and an excess of events at a mass of ≈ 125 GeV has been reported. If this excess of events is confirmed by further searches with more data, it will have extremely important consequences in the context of supersymmetric extensions of the Standard Model and, in particular the minimal one, the MSSM. We show that for a standard-like Higgs boson with a mass 123 M h 127 GeV , several unconstrained or constrained (i.e. with soft supersymmetry-breaking parameters unified at the high scale) MSSM scenarios would be excluded, while the parameters of some other scenarios would be severely restricted. Examples of constrained MSSM scenarios which would be disfavoured as they predict a too light Higgs particle are the minimal anomaly and gauge mediated supersymmetry-breaking models. The gravity mediated constrained MSSM would still be viable, provided the scalar top quarks are heavy and their trilinear coupling large. Significant areas of the parameter space of models with heavy supersymmetric particles, such as split or high-scale supersymmetry, could also be excluded as, in turn, they generally predict a too heavy Higgs particle.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/91d07bea15e44cc441c3195669446f6fb8486938

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Citations in the corpus

Investigating the near-criticality of the Higgs boson (2013, background): “It is not difficult to imagine theories able to drive λ(MPl) to zero: high-scale supersymmetry with tanβ = 1 [123–128]; partial N = 2 supersymmetry insuring D-flatness [129, 130]; an approximate Goldstone or shift symmetry [131, 132]; an infrared fixed-point of some transplanckian physics [121]; a p”
Fully covering the MSSM Higgs sector at the LHC (2015, background): “This possibility is ruled out not only from direct SUSY particle searches but also from the fact that the large value of the MSSM h boson mass, Mh = 125 GeV, requires a SUSY scale in the multi TeV range in GMSB scenarios (MS ∼ 3 TeV in minima GMSB) [70–79].”
Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector (2015, neutral): “Some of the models are disfavored [10] by the recent observation of a Higgs boson at mH ≈ 125 GeV [11,12].”
Natural supersymmetry: LHC, dark matter and ILC searches (2012, background): “Such a large value of mh is difficult to realize in models such as minimal anomaly mediation (mAMSB) or minimal gauge mediation (mGMSB) [10, 11] unless all sparticle masses are in the 10–20TeV range, in severe conflict with electroweak fine-tuning constraints.”
Interpreting LHC Higgs results from natural new physics perspective (2012, background): “A number of partly overlapping papers have recently investigated the 125 GeV Higgs-like excess in the context of composite Higgs [16], supersymmetric Higgs [17–28], and multi-Higgs models [29–32]; see also [33–41].”
Dark Matter through the Higgs portal (2019, background): “100 where the relic density log10(Ωχh (2)), resulting from the previously discussed pMSSM scan [507], is shown as a function of the branching ratio BR(h→ χ1χ1) and the LSP mass mχ01 , in respectively the left and right panels.”