Multi-Component Dark Matter

By K. Zurek. 2008

198 citations recorded by the source corpus.

We explore multi-component dark matter models where the dark sector consists of multiple stable states with different mass scales, and dark forces coupling these states further enrich the dynamics. The multi-component nature of the dark matter naturally arises in supersymmetric models, where both R parity and an additional symmetry, such as a Z{sub 2}, is preserved. We focus on a particular model where the heavier component of dark matter carries lepton number and annihilates mostly to leptons. The heavier component, which is essentially a sterile neutrino, naturally explains the PAMELA, ATIC and synchrotron signals, without an excess in antiprotons which typically mars other models of weak scale dark matter. The lighter component, which may have a mass from a GeV to a TeV, may explain the DAMA signal, and may be visible in low threshold runs of CDMS and XENON, which search for light dark matter.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c604b3ed89ebe95f785d265ea4857432adc39876

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Citations in the corpus

Abelian hidden sectors at a GeV (2009, background): “With negative soft masses for H and Hc, both H and Hc can develop VEVs, breaking the U(1)x gauge symmetry and giving the U(1)x gauge boson a mass [6, 9].”
micrOMEGAs4.1: Two dark matter candidates (2014, background): “Models where both components are WIMPs - and could therefore lead to typical signatures at different mass scales - have also been examined [20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33] When DM is made of two WIMPs the interactions between the two dark matter so-called dark matter conversi”
Dissecting cosmic-ray electron-positron data with Occam’s razor: the role of known pulsars (2008, unknown): “[109] D. Hooper and K. M. Zurek (2009), 0902.0593.”
Non-abelian dark sectors and their collider signatures (2009, unknown): “[36] 9 Kinetic mixing mediation is neglected in some recent U(1) dark sector papers, for instance Ref. [ 37 ] focuses”
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].”