Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of an astrophysical interpretation of PAMELA and Fermi-LAT
  data for future searches of a positron signal from dark matter annihilations   The recent data from PAMELA and Fermi-LAT can be interpreted as evidence of
new astrophysical sources of high energy positrons. In that case, such
astrophysical positrons constitute an additional background against the
positrons from dark matter annihilation. In this paper, we study the effect of
that background on the prospects for the detection of a positron dark matter
signal in future experiments. In particular, we determine the new regions in
the (mass, $\sigmav$) plane that are detectable by the AMS-02 experiment for
several dark matter scenarios and different propagation models. We find that,
due to the increased background, these regions feature annihilation rates that
are up to a factor or three larger than those obtained for the conventional
background. That is, an astrophysical interpretation of the present data by
PAMELA and Fermi-LAT implies that the detection of positrons from dark matter
annihilation is slightly more challenging than previously believed.

14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex