@article{8a79e07d5c8848dd8e49d1dde6315ba8,
title = "Search for dark matter annihilation in the Milky Way halo SEARCH for DARK MATTER ANNIHILATION in the ⋯ CHANG, LISANTI, and MISHRA-SHARMA",
abstract = "The Milky Way halo is the brightest source of dark matter annihilation in the sky. Indeed, the potential strength of the Galactic dark matter signal can supersede that expected from dwarf galaxies and galaxy groups even in regions away from the inner galaxy. In this paper, we present the results of a search for dark matter annihilation in the smooth Milky Way halo for |b|>20° and r<50° using 413 weeks of Fermi Pass 8 data within the energy range of ∼0.8-50 GeV. We exclude thermal dark matter with mass below ∼70 GeV that annihilates to bb at the 95% confidence level using the p6v11 cosmic-ray foreground model, providing the strongest limits on the annihilation cross section in this mass range. These results exclude the region of dark matter parameter space that is consistent with the excess of ∼GeV photons observed at the Galactic center for the bb annihilation channel and, for the first time, start probing the τ+τ- explanation. We explore how these results depend on uncertainties in the foregrounds by varying over a set of reasonable models.",
author = "Chang, {Laura J.} and Mariangela Lisanti and Siddharth Mishra-Sharma",
note = "Funding Information: L.J.C. is supported by a Paul and Daisy Soros Fellowship and a National Science Foundation Graduate Research Fellowship. M.L. is supported by the Department of Energy under Contract No. DESC0007968, the Alfred P. Sloan Foundation, and the Cottrell Scholar Program through the Research Corporation for Science Advancement. Funding Information: We thank Keith Bechtol, Ilias Cholis, Tim Cohen, Dan Hooper, Tim Linden, Nick Rodd, Ben Safdi, and Christoph Weniger for useful conversations. We thank Nick Rodd for producing the data used in this study, originally created for the analysis in . In addition to aforementioned software packages, this research made use of the Astropy , IPython , and Minuit packages. L. J. C. is supported by a Paul and Daisy Soros Fellowship and a National Science Foundation Graduate Research Fellowship. M. L. is supported by the Department of Energy under Contract No. DESC0007968, the Alfred P. Sloan Foundation, and the Cottrell Scholar Program through the Research Corporation for Science Advancement. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = dec,
day = "15",
doi = "10.1103/PhysRevD.98.123004",
language = "English (US)",
volume = "98",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "12",
}