Dark matter and collider signatures of the MSSM

Andrew Fowlie*, Kamila Kowalska, Leszek Roszkowski, Enrico Maria Sessolo, Yue Lin Sming Tsai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)


We explore the MSSM with nine free parameters (p9MSSM) that have been selected as a minimum set that allows an investigation of neutralino dark matter and collider signatures while maintaining consistency with several constraints. These include measurement of the dark matter relic density from PLANCK, main properties of the discovered Higgs boson, LHC direct supersymmetry searches, recent evidence for a Standard Model-like branching ratio BR(B s→μ+μ-), and the measurement of δ(g-2)μ, plus a number of other electroweak and flavor physics constraints. We perform a simulation of two LHC direct supersymmetry searches at √s=8 TeV: the CMS inclusive αT search for squarks and gluinos and the CMS electroweak production search with 3l+ETmiss in the final state. We use the latter to identify the regions of the parameter space, consistent at 2σ with δ(g-2)μ, that are not excluded by the direct limits from the electroweak production. We find that they correspond to a neutralino mass in the window 200 GeVâ‰m χâ‰500 GeV. We also implement the likelihood for the XENON100 exclusion bound, in which we consider for the first time the impact of a recent determination of the ΣπN term from CHAOS data, ΣπN=43±12 MeV. We show that in light of this measurement, the present statistical impact of the XENON100 bound is greatly reduced, although future sensitivities of the LUX and XENON1T experiments will have decisive impact on the mixed bino/Higgsino composition of the neutralino. We point out some tension between the constraints from δ(g-2) μ and XENON100. Finally, we present prospects for various indirect searches of dark matter, namely γ-ray fluxes from dSphs and the Galactic Center at Fermi-LAT, and the positron flux at AMS02. We also show the five-year sensitivity on the spin-dependent neutralino-proton cross section due to neutrino fluxes from the Sun at IceCube.

Original languageEnglish
Article number055012
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
Publication statusPublished - 13 Sept 2013
Externally publishedYes


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