A. V. Gladyshev

EGRET Excess of Diffuse Galactic Gamma Rays as Tracer of Dark Matter

The public data from the EGRET space telescope on diffuse Galactic gamma rays in the energy range from 0.1 to 10 GeV are reanalyzed with the purpose of searching for signals of Dark Matter annihilation (DMA). The analysis confirms the previously observed excess for energies above 1 GeV in comparison with the expectations from conventional Galactic models. In addition, the excess was found to show all the key features of a signal from Dark Matter Annihilation (DMA): a) the excess is observable in all sky directions and has the same shape everywhere, thus pointing to a common source; b) the shape corresponds to the expected spectrum of the annihilation of non-relativistic massive particles into – among others – neutral π 0 mesons, which decay into photons. From the energy spectrum of the excess we deduce a WIMP mass between 50 and 100 GeV, while from the intensity of the excess in all sky directions the shape of the halo could be reconstructed. The DM halo is consistent with an almost spherical isothermal profile with substructure in the Galactic plane in the form of toroidal rings at 4 and 14 kpc from the center. These rings lead to a peculiar shape of the rotation curve, in agreement with the data, which proves that the EGRET excess traces the Dark Matter.

The supersymmetric interpretation of the EGRET excess of diffuse Galactic gamma rays

Recently it was shown that the excess of diffuse Galactic gamma rays above 1 GeV traces the Dark Matter halo, as proven by reconstructing the peculiar shape of the rotation curve of our Galaxy from the gamma ray excess. This can be interpreted as a Dark Matter annihilation signal. In this Letter we investigate if this interpretation is consistent with supersymmetry. It is found that the EGRET excess combined with all electroweak constraints is fully consistent with the minimal mSUGRA model for scalars in the TeV range and gauginos below 500 GeV.

The \(b \to X_s \gamma\) rate and Higgs boson limits in the constrained minimal supersymmetric model

Abstract. New NLO

MSSM PREDICTIONS OF THE NEUTRAL HIGGS BOSON MASSES AND LEP II PRODUCTION CROSS SECTIONS

b \to X_s \gamma

Supersymmetry and LHC

calculations have become available using resummed radiative corrections. Using these calculations we perform a global fit of the supergravity inspired constrained minimal supersymmetric model. We find that the resummed calculations show similar constraints as the LO calculations, namely that only with a relatively heavy supersymmetric mass spectrum of

Higgs limit and b→sγ constraints in minimal supersymmetry

\mathcal{O}

PRODUCTION OF LONG-LIVED CHARGED SLEPTONS AT LHC

(1 TeV) the b–

Is (Low Energy) SUSY Still Alive

\tau

Long-lived Charginos in the Focus-point Region of the MSSM Parameter Space

Yukawa unification and the

On the LHC observation of gluinos from the Egret-preferred region

b \to X_s \gamma