Implications of the 125 GeV Higgs boson for scalar dark matter and for the CMSSM phenomenology

By M. Kadastik, K. Kannike, A. Racioppi, M. Raidal. 2011

195 citations recorded by the source corpus.

A bstractWe study phenomenological implications of the ATLAS and CMS hint of a 125 ± 1 GeV Higgs boson for the singlet, and singlet plus doublet non-supersymmetric dark matter models, and for the phenomenology of the CMSSM. We show that in scalar dark matter models the vacuum stability bound on Higgs boson mass is lower than in the standard model and the 125 GeV Higgs boson is consistent with the models being valid up the GUT or Planck scale. We perform a detailed study of the full CMSSM parameter space keeping the Higgs boson mass fixed to 125 ± 1 GeV, and study in detail the freeze-out processes that imply the observed amount of dark matter. After imposing all phenomenological constraints except for the muon (g − 2)μ, we show that the CMSSM parameter space is divided into well separated regions with distinctive but in general heavy sparticle mass spectra. Imposing the (g − 2)μ constraint introduces severe tension between the high SUSY scale and the experimental measurements — only the slepton co-annihilation region survives with potentially testable sparticle masses at the LHC. In the latter case the spin-independent DM-nucleon scattering cross section is predicted to be below detectable limit at the XENON100, but might be of measurable magnitude in the general case of light dark matter with large bino-higgsino mixing and unobservably large scalar masses.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/05ef5073ab79bca7aac95710e99f8def2f279fd2

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

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].”
$Z_3$ Scalar Singlet Dark Matter (2012, methodology): “In the model considered here, vacuum stability at the GUT scale fares better than in the SM, indeed even if the top contribution cannot guarantee vacuum stability, a large Higgssinglet coupling λSH gives a positive contribution to the running of λH [8, 9] and solves the issue.”
Reconstructing Higgs boson properties from the LHC and Tevatron data (2012, methodology): “Supersymmetric theories that attempt to solve the naturalness problem of the electroweak scale have been stringently constrained by the LHC direct searches as well as by the Higgs boson results [58, 83–113].”
Vacuum stability conditions from copositivity criteria (2012, methodology): “As discussed 4The conditions given in [18] are necessary conditions for positivity, not copositivity; in [2] sufficient conditions were used.”
The constrained NMSSM and Higgs near 125 GeV (2012, background): “ent, a (g 22) =2, and the relic density of dark matter, h. The possibility of describing the LHC observations in the context of the MSSM has been explored in numerous papers, including [3][4][5][6][7][8][9]. A general conclusion seems to be that if all the constraints noted above, including a and 2”