High Energy Theory Seminar

TeV scale Wino, provides a possible Dark Matter candidate in the context of the Minimal Supersymmetric Standard Model. Such a dark matter candidate evades all current direct detection and collider bounds and can only be probed through its annihilation products giving indirect detection signals. I will present a multichannel analysis of these indirect signals, including one-loop electroweak and Sommerfeld enhancement corrections affecting both the annihilation cross-section and the spectra of the end products of these annihilations. I derive limits from cosmic ray antiprotons and positrons, from continuum galactic and extragalactic diffuse gamma-ray spectra, from the absence of a gamma-ray line feature at the galactic center above 500 GeV in energy, from gamma-rays toward nearby dwarf spheroidal galaxies and from CMB power-spectra. Additionally, I will discuss the future prospects for neutrino observations toward the inner Galaxy and from antideuteron searches. On each of these indirect detection probes, an important aspect is the relevance of astrophysical uncertainties, that can impact the strength and robustness of the derived limits. Taking all above into consideration, 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 gamma-ray line toward the galactic center; with limits from other indirect detection probes confirming the main bulk of the excluded mass ranges.