Prospects for SUSY dark matter after the LHC Run 1

Abstract

In this proceeding we present the results of the recent phenomenological study by the MasterCode collaboration [1] of the Dark Matter (DM) annihilation mechanisms in the currently allowed parameter space of the CMSSM, NUHM1, NUHM2 and pMSSM10 models. We have assumed that the lightest neutralino χ 0 1 is the Lightest Supersymmetric Particle (LSP). The annihilation mechanisms involved in these models range from coannihilation with the next-to-LSP (NLSP) particle (e.g. the lightest stauτ 1 , stopt 1 or charginoχ ± 1 ) to resonant annihilation via s-channel exchange of a Higgs (h/H/A) boson or a Z boson and enhanced annihilation rate in the so-called focus-point region due to a larger Higgsino component of the LSP. Special attention has been given to the interplay of future LHC searches and direct DM detection experiments in the exploration of the allowed regions. We have found that the τ 1 coannihilation regions of the CMSSM, NUHM1 and NUHM2 will be largely covered by future LHC searches for E T signatures and long-lived charged particles, while direct detection DM experiments (LZ) will probe the H/A funnel, focus point andχ ± 1 coannihilation regions. In the case of the pMSSM10, LHC experiments will be able to explore only parts of the preferred 68% CL region, whereχ ± 1 is the dominant mechanism. On the other hand, DM direct detection experiments will be able to probe the favored pMSSM10 parameter space more extensively.

Detecting underabundant neutralinos

“…For µ < 0 (not shown in the paper), in that well-tempered bino-wino region the spin-independent cross sections are often within the reach of the Xenon1T experiment. The recent result of a general 10 parameter MSSM scan, including the g − 2, the collider constraints as well as the DM constraints with Ω χ = Ω DM , also prefers this parameter region [86,87].…”