Elsevier

Physics Letters B

Volume 778, 10 March 2018, Pages 296-302
Physics Letters B

Probing GeV-scale MSSM neutralino dark matter in collider and direct detection experiments

https://doi.org/10.1016/j.physletb.2018.01.030Get rights and content
Under a Creative Commons license
open access

Abstract

Given the recent constraints from the dark matter (DM) direct detections, we examine a light GeV-scale (2–30 GeV) neutralino DM in the alignment limit of the Minimal Supersymmetric Standard Model (MSSM). In this limit without decoupling, the heavy CP-even scalar H plays the role of the Standard Model (SM) Higgs boson while the other scalar h can be rather light so that the DM can annihilate through the h resonance or into a pair of h to achieve the observed relic density. With the current collider and cosmological constraints, we find that such a light neutralino DM above 6 GeV can be excluded by the XENON-1T (2017) limits while the survivied parameter space below 6 GeV can be fully tested by the future germanium-based light dark matter detections (such as CDEX), by the Higgs coupling precison measurements or by the production process e+ehA at an electron–positron collider (Higgs factory).

Cited by (0)