Asymmetric Dark Matter from a GeV Hidden Sector

By T. Cohen, D. Phalen, A. Pierce, K. Zurek. 2010

180 citations recorded by the source corpus.

Asymmetric Dark Matter (ADM) models relate the dark matter density to the baryon asymmetry, so that a natural mass scale for ADM is around a few GeV. In existing models of ADM, this mass scale is unexplained; here we generate this GeV scale for dark matter (DM) from the weak scale via gauge kinetic mixing with a new Abelian dark force. In addition, this dark sector provides an efficient mechanism for suppressing the symmetric abundance of DM through annihilations to the dark photon. We augment this sector with a higher dimensional operator responsible for communicating the baryon asymmetry to the dark sector. Our framework also provides DM candidate for gauge mediation models. It results in a direct detection cross section of interest for current experiments: sigma less than or similar to 10^{-42} cm^2 for DM masses in the range 1 - 15 GeV.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/03aa9d7cae79dba0ef22850469eb0a6e899bc2b2

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Citations in the corpus

Constraining light dark matter with diffuse X-ray and gamma-ray observations (2013, background): “photon, depending on whether the latter is heavier or lighter than γ̃d [7, 75, 76, 79, 80].”
Light dark matter and Z′ dark force at colliders (2012, background): “The possibility of light dark matter within this mass regime has received considerable attention recently [11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40].”
Asymmetric WIMP dark matter (2011, background): “In ADM two distinct scenarios are typically considered [15–44].”
Asymmetric dark matter from leptogenesis (2011, methodology): “For concreteness, we specialize to models with a hidden U(1)d gauge symmetry [ 7 ], where the symmetric DM component annihilates predominantly into a pair of hidden sector photons, d. The hidden sector couples to the visible sector through the vector portal,”
Constraining light dark matter with low-energy e+e− colliders (2013, unknown): “[38–55] and references therein.”
Cosmological simulations with self-interacting dark matter – II. Halo shapes versus observations (2012, background): “…possibility is that the dark matter belongs to and interacts with a “dark” or “hidden” sector (Khlopov, Stephan & Fargion 2006; Feldman, Kors & Nath 2007; Foot 2007; Pospelov, Ritz & Voloshin 2008; Feng & Kumar 2008; Arkani-Hamed et al. 2009; Feng et al. 2009; Sigurdson 2009; Cohen et al. 2010).”
Gravitational probes of dark matter physics (2017, background): “This requires annihilation cross sections in the early Universe at least as large as those of a thermal relic [52], and so Λ−1ADM & 5× 10 −5 GeV−1.”