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Published July 15, 2013 | Submitted + Published
Journal Article Open

Xenophobic dark matter

Abstract

We consider models of xenophobic dark matter, in which isospin-violating dark matter–nucleon interactions significantly degrade the response of xenon direct detection experiments. For models of near-maximal xenophobia, with neutron-to-proton coupling ratio f_n/f_p ≈ -0.64, and dark matter mass near 8 GeV, the regions of interest for CoGeNT and CDMS-Si and the region of interest identified by Collar and Fields in CDMS-Ge data can be brought into agreement. This model may be tested in future direct, indirect, and collider searches. Interestingly, because the natural isotope abundance of xenon implies that xenophobia has its limits, we find that this xenophobic model may be probed in the near future by xenon experiments. Near-future data from the LHC and Fermi-LAT may also provide interesting alternative probes of xenophobic dark matter.

Additional Information

© 2013 American Physical Society. Received 20 June 2013; published 15 July 2013. We are grateful to E. Figueroa and D. McKinsey for useful discussions. We are grateful to the organizers of the APS April Meeting, to the organizers of the Light Dark Matter Workshop at MCTP, and to the KITP, where part of this work was conducted. The work of J. L. F. is supported in part by NSF Grant No. PHY-0970173 and a Simons Foundation Fellowship. The work of J. K. prior to June 1, 2013 was supported in part by U.S. Department of Energy Grant No. DE-FG02-04ER41291. D. S. is supported in part by U.S. Department of Energy Grant No. DE-FG02-92ER40701 and by the Gordon and Betty Moore Foundation through Grant No. 776 to the Caltech Moore Center for Theoretical Cosmology and Physics.

Attached Files

Published - PhysRevD.88.015021.pdf

Submitted - 1306.2315v1.pdf

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August 19, 2023
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