Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for a Dark Matter annihilation signal from the Galactic Center
  halo with H.E.S.S   A search for a very-high-energy (VHE; >= 100 GeV) gamma-ray signal from
self-annihilating particle Dark Matter (DM) is performed towards a region of
projected distance r ~ 45-150 pc from the Galactic Center. The
background-subtracted gamma-ray spectrum measured with the High Energy
Stereoscopic System (H.E.S.S.) gamma-ray instrument in the energy range between
300 GeV and 30 TeV shows no hint of a residual gamma-ray flux. Assuming
conventional Navarro-Frenk-White (NFW) and Einasto density profiles, limits are
derived on the velocity-weighted annihilation cross section < \sigma v> as a
function of the DM particle mass. These are among the best reported so far for
this energy range. In particular, for the DM particle mass of ~1 TeV, values
for <\sigma v> above 3 * 10^(-25) cm^3 s^(-1) are excluded for the Einasto
density profile. The limits derived here differ much less for the chosen
density profile parametrizations, as opposed to limits from gamma-ray
observations of dwarf galaxies or the very center of the Milky Way, where the
discrepancy is significantly larger.

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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas