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Mechanism for Thermal Relic Dark Matter of Strongly Interacting Massive Particles

Yonit Hochberg, Eric Kuflik, Tomer Volansky, and Jay G. Wacker
Phys. Rev. Lett. 113, 171301 – Published 22 October 2014
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Abstract

We present a new paradigm for achieving thermal relic dark matter. The mechanism arises when a nearly secluded dark sector is thermalized with the standard model after reheating. The freeze-out process is a number-changing 32 annihilation of strongly interacting massive particles (SIMPs) in the dark sector, and points to sub-GeV dark matter. The couplings to the visible sector, necessary for maintaining thermal equilibrium with the standard model, imply measurable signals that will allow coverage of a significant part of the parameter space with future indirect- and direct-detection experiments and via direct production of dark matter at colliders. Moreover, 32 annihilations typically predict sizable 22 self-interactions which naturally address the “core versus cusp” and “too-big-to-fail” small-scale structure formation problems.

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  • Received 1 April 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.171301

© 2014 American Physical Society

Authors & Affiliations

Yonit Hochberg1,2,*, Eric Kuflik3,†, Tomer Volansky3,‡, and Jay G. Wacker4,§

  • 1Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA
  • 2Department of Physics, University of California, Berkeley, California 94720, USA
  • 3Department of Physics, Tel Aviv University, Tel Aviv 69978, Israel
  • 4SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA

  • *yonit.hochberg@berkeley.edu
  • ekuflik@post.tau.ac.il
  • tomerv@post.tau.ac.il
  • §jgwacker@stanford.edu

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Issue

Vol. 113, Iss. 17 — 24 October 2014

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