Title

Directly detecting isospin-violating dark matter

Document Type

Article

Publication Date

3-1-2018

Subject Area

ARRAY(0x55597f1c18e0)

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.

Publication Title

Physical Review D

Volume

97

Issue

5

Digital Object Identifier (DOI)

10.1103/PhysRevD.97.056004

ISSN

24700010

E-ISSN

24700029

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