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Title: The fraternal WIMP miracle

Abstract

We identify and analyze thermal dark matter candidates in the fraternal twin Higgs model and its generalizations. The relic abundance of fraternal twin dark matter is set by twin weak interactions, with a scale tightly tied to the weak scale of the Standard Model by naturalness considerations. As such, the dark matter candidates benefit from a ''fraternal WIMP miracle'', reproducing the observed dark matter abundance for dark matter masses between 50 and 150 GeV . However, the couplings dominantly responsible for dark matter annihilation do not lead to interactions with the visible sector. The direct detection rate is instead set via fermionic Higgs portal interactions, which are likewise constrained by naturalness considerations but parametrically weaker than those leading to dark matter annihilation. The predicted direct detection cross section is close to current LUX bounds and presents an opportunity for the next generation of direct detection experiments.

Authors:
 [1];  [2]
  1. Department of Physics, University of California, Santa Barbara, CA 93106 (United States)
  2. Theory Division, CERN, CH-1211 Geneva 23 (Switzerland)
Publication Date:
OSTI Identifier:
22525220
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; CROSS SECTIONS; DETECTION; FERMIONS; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; REST MASS; STANDARD MODEL; WEAK INTERACTIONS

Citation Formats

Craig, Nathaniel, and Katz, Andrey. The fraternal WIMP miracle. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/10/054.
Craig, Nathaniel, & Katz, Andrey. The fraternal WIMP miracle. United States. doi:10.1088/1475-7516/2015/10/054.
Craig, Nathaniel, and Katz, Andrey. Thu . "The fraternal WIMP miracle". United States. doi:10.1088/1475-7516/2015/10/054.
@article{osti_22525220,
title = {The fraternal WIMP miracle},
author = {Craig, Nathaniel and Katz, Andrey},
abstractNote = {We identify and analyze thermal dark matter candidates in the fraternal twin Higgs model and its generalizations. The relic abundance of fraternal twin dark matter is set by twin weak interactions, with a scale tightly tied to the weak scale of the Standard Model by naturalness considerations. As such, the dark matter candidates benefit from a ''fraternal WIMP miracle'', reproducing the observed dark matter abundance for dark matter masses between 50 and 150 GeV . However, the couplings dominantly responsible for dark matter annihilation do not lead to interactions with the visible sector. The direct detection rate is instead set via fermionic Higgs portal interactions, which are likewise constrained by naturalness considerations but parametrically weaker than those leading to dark matter annihilation. The predicted direct detection cross section is close to current LUX bounds and presents an opportunity for the next generation of direct detection experiments.},
doi = {10.1088/1475-7516/2015/10/054},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 10,
volume = 2015,
place = {United States},
year = {2015},
month = {10}
}