Revisiting the Higgs mass and dark matter in the CMSSM

John Ellis, Keith A. Olive

Research output: Contribution to journalArticlepeer-review

139 Scopus citations

Abstract

Taking into account the available accelerator and astrophysical constraints, the mass of the lightest neutral Higgs boson h in the minimal supersymmetric extension of the Standard Model with universal soft supersymmetry-breaking masses (CMSSM) has been estimated to lie between 114 and ~130 GeV. Recent data from ATLAS and CMS hint that mh~125 GeV, though mh~119 GeV may still be a possibility. Here we study the consequences for the parameters of the CMSSM and direct dark matter detection if the Higgs hint is confirmed, focusing on the strips in the (m1/2,m0) planes for different tanβ and A0 where the relic density of the lightest neutralino χ falls within the range of the cosmological cold dark matter density allowed by WMAP and other experiments. We find that if mh~125 GeV focus-point strips would be disfavoured, as would the low-tanβ τ̃-χ and t̃1-χ coannihilation strips, whereas the τ̃-χ coannihilation strip at large tanβ and A0>0 would be favoured, together with its extension to a funnel where rapid annihilation via direct-channel H/A poles dominates. On the other hand, if mh~119 GeV more options would be open. We give parameterisations of WMAP strips with large tanβ and fixed A0/m0>0 that include portions compatible with mh=125 GeV, and present predictions for spin-independent elastic dark matter scattering along these strips. These are generally low for models compatible with mh=125 GeV, whereas the XENON100 experiment already excludes some portions of strips where mh is smaller.

Original languageEnglish (US)
Article number2005
Pages (from-to)1-13
Number of pages13
JournalEuropean Physical Journal C
Volume72
Issue number5
DOIs
StatePublished - May 2012

Bibliographical note

Funding Information:
This work has been supported in part by the London Centre for Terauniverse Studies (LCTS), using funding from the European Research Council via the Advanced Investigator Grant 267352. The work of K.A.O. is also supported in part by DOE grant DE-FG02-94ER-40823 at the University of Minnesota.

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