Minimal dark matter: model and results

By Marco Cirelli, A. Strumia. 2009

814 citations recorded by the source corpus.

We recap the main features of minimal dark matter (MDM) and assess its status in the light of recent experimental data. The theory selects an electroweak 5-plet with hypercharge Y=0 as a fully successful DM candidate, automatically stable against decay and with no free parameters: DM is a fermion with a 9.6 TeV mass. The direct detection cross-section, predicted to be 10−44 cm2, is within reach of next-generation experiments. DM is accompanied by a charged fermion 166 MeV heavier: we discuss how it might manifest. Thanks to an electroweak Sommerfeld enhancement of more than 2 orders of magnitude, DM annihilations into W+W− give, in the presence of a modest astrophysical boost factor, an e+ flux compatible with the PAMELA excess (but not with the ATIC hint for a peak: MDM instead predicts a quasi-power-law spectrum), a flux concentrated at energies above 100 GeV, and photon fluxes comparable with present limits, depending on the DM density profile.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d6af2e8b67980045b0e8f0104a6fe056fb7acb4e

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Citations in the corpus

Scalar multiplet dark matter (2009, background): “It has been shown that a viable DM candidate with the correct relic abundance can be obtained in three regimes, lowmass (mH0 ≪ mW ) [13,23], middle-mass (mH0 ≃ mW ) [19,21] and high-mass (mH0 ≫ mW ) [21,25].”
Accidental composite dark matter (2015, background): “J H E P 0 7 ( 2 0 1 5 ) 0 3 9 idea can be minimally realized by adding to the SM one extra multiplet that cannot have any Yukawa interaction with SM particles, and that contains a DM candidate ([1, 2]; a different proposal to get accidentally stable DM was presented by [3]).”
Direct detection of electroweak-interacting dark matter (2011, methodology): “When the fermionic n-tuplet has only SU(2)L × U(1)Y gauge interactions in the SM and all the components have a common mass at tree level, the charged components become heavier than the neutral one because of quantum loop corrections [ 6 ].”
Dark matter models and direct detection (2019, background): “Indeed, thermal candidates that are electroweak multiplets (such as a pure Higgsino or Wino in supersymmetric extensions of the SM) remain compelling DM candidates [42].”
Weak Corrections are Relevant for Dark Matter Indirect Detection (2010, methodology): “This generic situation is realized in the region of the MSSM parameter space where DM could be the neutral component of the fermionic wino weak triplet with a value of the mass M ∼ 3 TeV dictated by the cosmological DM relic density [26, 29].”
The Composite Nambu-Goldstone Higgs (2015, background): “Perhaps the most appealing solution from the viewpoint of the SM is “minimal dark matter” [12], a theory in which all the symmetries which are needed for phenomenological consistence are accidental.”
Building and testing models with extended Higgs sectors (2017, neutral): “One specific direction which received much attention goes under the name of “minimal dark matter” [414, 415, 416].”
In wino veritas? Indirect searches shed light on neutralino dark matter (2013, background): “But some of the most natural candidates for WIMPs come from simple SU(2)L multiplets, with winos and higgsinos serving as important examples [22, 101].”