Tuesday, March 5, 2013

1303.0329 (Daniel Feldman et al.)

Well-Mixed Dark Matter, Fermi Photons, and the Higgs    [PDF]

Daniel Feldman, Pearl Sandick
The breaking of electroweak symmetry through renormalization group flow in models that have MSSM spectra is found to produce neutralino dark matter that is capable of yielding signals in the Fermi-LAT satellite gamma-ray data. The "well-mixed" neutralino dark matter candidate is a thermal relic with an abundance consistent with that of cold dark matter measured by the WMAP experiment and others. We stress that this result arises within the MSSM (i.e. minimal particle content), and all constraints from indirect dark matter searches, direct detection experiments, and the LHC are satisfied. The mass of the lightest Higgs boson is predicted to be in the range (125-126) GeV in agreement with the ATLAS and CMS data. Models that produce a signal in the Fermi-LAT gamma-ray data are not yet constrained by direct detection experiments, i.e. the current limit from XENON-100, but will be probed soon. Finally, the gluino mass is naturally of O(TeV), and therefore the entire class of models will be tested by the LHC.
View original: http://arxiv.org/abs/1303.0329

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