Indirect detection analysis: wino dark matter case study

Abstract

We perform a multichannel analysis of the indirect signals for the Wino Dark Matter, including one-loop electroweak and Sommerfeld enhancement corrections. We derive limits from cosmic ray antiprotons and positrons, from continuum galactic and extragalactic diffuse γ-ray spectra, from the absence of γ-ray line features at the galactic center above 500 GeV in energy, from γrays toward nearby dwarf spheroidal galaxies and galaxy clusters, and from CMB power-spectra. Additionally, we show the future prospects for neutrino observations toward the inner Galaxy and from antideuteron searches. For each of these indirect detection probes we include and discuss the relevance of the most important astrophysical uncertainties that can impact the strength of the derived limits. We find that the Wino as a dark matter candidate is excluded in the mass range bellow 800 GeV from antiprotons and between 1.8 and 3.5 TeV from the absence of a γ-ray line feature toward the galactic center. Limits from other indirect detection probes confirm the main bulk of the excluded mass ranges.

Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

“…Ref. [23] A similar situation occurs for lines (or sharp features) in the gamma-ray spectrum, originated by the rightmost two diagrams in figure 9. These limits are very sensitive to the choice of DM distribution profile in the Galactic Center (GC) region.…”

“…More precisely, if one requires that χ is thermally produced, via the standard freeze-out mechanism, and that it constitutes the whole of DM, then its mass M is univocally determined to be M 3.0 ÷ 3.2 TeV (we adopt here the value from [23], which takes into account all higher order corrections, including the Sommerfeld enhancement). Other ranges of masses, however, are also interesting.…”

“…Detailed analyses have been performed in [77,78] and [23]. According to the latter, the most relevant bounds come from antiproton and gamma-ray line measurements.…”

Higgs mass determination in supersymmetry

“…Most of this parameter space could in principle be probed at a larger hadron collider and future dark matter experiments [78,[83][84][85][86][87]. In this interesting region, tan β is constrained between 2 and 3; scalars are clearly out of reach, between 10 2 and 10 3 TeV, but not heavy enough to guarantee the absence of FCNC [88].…”

The ATLAS diboson resonance in non-supersymmetric SO(10)

“…Instead, indirect dark matter detection experiments, such as searches for gamma rays from the Galactic Center or dwarf spheroidal galaxies, are quite promising JHEP02(2016)120 since this dark matter has a relatively large annihilation cross section. Most work to date on an SU(2) L triplet fermion dark matter candidate has assumed a Majorana rather than a Dirac particle [155][156][157][158] and there is little work on the Dirac triplet dark matter. To test the dark matter in our model in the indirect detection experiments, it is quite important to evaluate its annihilation cross section precisely and compare it with that of the Majorana dark matter.…”