WIMPless dark matter from non-Abelian hidden sectors with anomaly-mediated supersymmetry breaking

Journal Article · Sun May 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.095011· OSTI ID:21541639

Feng, Jonathan L ^[1]; Shadmi, Yael ^[2]

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1. Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)
2. Physics Department, Technion-Israel Institute of Technology, Haifa 32000 (Israel)

In anomaly-mediated supersymmetry breaking models, superpartner masses are proportional to couplings squared. Their hidden sectors therefore naturally contain WIMPless dark matter, particles whose thermal relic abundance is guaranteed to be of the correct size, even though they are not weakly interacting massive particles. We study viable dark matter candidates in WIMPless anomaly-mediated supersymmetry breaking models with non-Abelian hidden sectors and highlight unusual possibilities that emerge in even the simplest models. In one example with a pure SU(N) hidden sector, stable hidden gluinos freeze out with the correct relic density, but have an extremely low, but natural, confinement scale, providing a framework for self-interacting dark matter. In another simple scenario, hidden gluinos freeze out and decay to visible Winos with the correct relic density, and hidden glueballs may either be stable, providing a natural framework for mixed cold-hot dark matter, or may decay, yielding astrophysical signals. Last, we present a model with light hidden pions that may be tested with improved constraints on the number of nonrelativistic degrees of freedom. All of these scenarios are defined by a small number of parameters, are consistent with gauge coupling unification, preserve the beautiful connection between the weak scale and the observed dark matter relic density, and are natural, with relatively light visible superpartners. We conclude with comments on interesting future directions.

• OSTI ID: 21541639
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASTROPHYSICS
BASIC INTERACTIONS
BOSONS
COUPLING
DECAY
DEGREES OF FREEDOM
ELEMENTARY PARTICLES
GLUEBALLS
HADRONS
INTERACTIONS
MASS
MATTER
MESONS
NONLUMINOUS MATTER
PARTICLE DECAY
PHYSICS
PIONS
PSEUDOSCALAR MESONS
SUPERSYMMETRY
SYMMETRY
SYMMETRY BREAKING
WEAK INTERACTIONS