Simplified Models of Mixed Dark Matter
- Creators
-
Cheung, Clifford
- Sanford, David
Abstract
We explore simplified models of mixed dark matter (DM), defined here to be a stable relic composed of a singlet and an electroweak charged state. Our setup describes a broad spectrum of thermal DM candidates that can naturally accommodate the observed DM abundance but are subject to substantial constraints from current and upcoming direct detection experiments. We identify "blind spots" at which the DM-Higgs coupling is identically zero, thus nullifying direct detection constraints on spin independent scattering. Furthermore, we characterize the fine-tuning in mixing angles, i.e. well-tempering, required for thermal freeze-out to accommodate the observed abundance. Present and projected limits from LUX and XENON1T force many thermal relic models into blind spot tuning, well-tempering, or both. This simplified model framework generalizes bino-Higgsino DM in the MSSM, singlino-Higgsino DM in the NMSSM, and scalar DM candidates that appear in models of extended Higgs sectors.
Additional Information
© 2014 The Author(s). Article funded by SCOAP. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received December 22, 2013; Accepted January 13, 2014; Published February 6, 2014. We are grateful to the Kavli Institute for Theoretical Physics at Santa Barbara and the Aspen Center for Physics, where part of this work was conducted. DS is supported in part by U.S. Department of Energy grant 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. CC is supported by a DOE Early Career Award DE-SC0010255.Attached Files
Published - 1475-7516_2014_02_011.pdf
Submitted - 1311.5896v1.pdf
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Additional details
- Eprint ID
- 42892
- Resolver ID
- CaltechAUTHORS:20131209-084406844
- DE-FG02-92ER40701
- Department of Energy (DOE)
- 776
- Gordon and Betty Moore Foundation
- DE-SC0010255
- Department of Energy (DOE)
- Created
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2013-12-12Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Caltech Theory, Moore Center for Theoretical Cosmology and Physics