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Title: The fraternal WIMP miracle

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] ;  [3]
  1. Department of Physics, University of California,Santa Barbara, CA 93106 (United States)
  2. Theory Division, CERN,CH-1211 Geneva 23 (Switzerland)
  3. (CAP),Université de Genève,24 quai E. Ansermet, CH-1211, Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
22458397
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 10; Other Information: PUBLISHER-ID: JCAP10(2015)054; OAI: oai:repo.scoap3.org:12426; Article funded by SCOAP3. 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.; Country of input: International Atomic Energy Agency (IAEA)
Sponsoring Org:
SCOAP3, CERN, Geneva (Switzerland)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABUNDANCE; ANNIHILATION; COUPLINGS; CROSS SECTIONS; DETECTION; FERMIONS; GEV RANGE; HIGGS MODEL; NONLUMINOUS MATTER; STANDARD MODEL; WEAK INTERACTIONS; WIMPS