Directly detecting Isospin-Violating Dark Matter

Abstract

We consider the prospects for multiple dark matter direct detection experiments to determine if the interactions of a dark matter candidate are isospin-violating. We focus on theoretically well-motivated examples of isospin-violating dark matter (IVDM), including models in which dark matter interactions with nuclei are mediated by a dark photon, a Z, or a squark. We determine that the best prospects for distinguishing IVDM from the isospin-invariant scenario arise in the cases of dark photon- or Z-mediated interactions, and that the ideal experimental scenario would consist of large exposure xenon- and neon-based detectors. If such models just evade current direct detection limits, then one could distinguish such models from the standard isospin-invariant case with two detectors with of order 100 ton-year exposure.

16 pages, 4 figures, 2 tables. Published version

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Cited by in corpus (5)

• Prospects of Migdal Effect in the Explanation of XENON1T Electron Recoil Excess
• Investigation of CMB constraints for dark matter-helium scattering
• New Constraints on Xenonphobic Dark Matter from DEAP-3600
• Effective field theory and inelastic dark matter results from XENON1T
• Isospin-violating dark matter at liquid noble detectors: new constraints, future projections, and an exploration of target complementarity