Exploring Spin-3/2 Dark Matter with Effective Higgs Couplings

Abstract

We study an economical model of weakly-interacting massive particle dark matter (DM) which has spin 3/2 and interacts with the 125-GeV Higgs boson via effective scalar and pseudoscalar operators. We apply constraints on the model from the relic density data, LHC measurements of the Higgs boson, and direct and indirect searches for DM, taking into account the effective nature of the DM-Higgs couplings. We show that this DM is currently viable in most of the mass region from about 58 GeV to 2.3 TeV and will be probed more stringently by ongoing and upcoming experiments. Nevertheless, the presence of the DM-Higgs pseudoscalar coupling could make parts of the model parameter space elusive from future tests. We find that important aspects of this scenario are quite similar to those of its more popular spin-1/2 counterpart.

13 pages, 3 figures, somewhat expanded, references added, matches publication

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Cited by in corpus (16)

• Global analyses of Higgs portal singlet dark matter models using GAMBIT
• The Higgs Portal to Cosmology
• Higher Spin Dark Matter
• Dark matter of any spin -- an effective field theory and applications
• The case for decaying spin-3/2 dark matter
• On-shell effective theory for higher-spin dark matter
• Spin-3/2 dark matter in a simple $t$-channel model
• Towards A Direct Detection of the Spin of Dark Matter
• Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology
• Effective Field Theory approach to lepto-philic self conjugate dark matter
• Doubly Blind Spots in Scalar Dark Matter Models
• Direct signals from electroweak singlets through the Higgs portal
• Type-3/2 Seesaw Mechanism
• Neutrino specific spin-3/2 dark matter
• Twist-2 operators induced Dark Matter Interactions
• Simplified Dark Matter Models