Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutralino Annihilation to Gluons   We present a complete calculation of the cross section for neutralino
annihilation into the two-gluon final state. This channel can be quite
important for the phenomenology of neutralino annihilation due to the
well-known helicity suppression of neutralino annihilation into light quarks
and leptons. In addition, we calculate the cross section for annihilation of
neutralinos into a gluon and quark-antiquark pair, and discuss QCD corrections
to the tree-level cross sections for neutralino annihilation into quarks. If
the neutralino is lighter than the top quark, the effect of these results on
high-energy neutrino signals from neutralino annihilation in the Sun and in the
Earth can be significant, especially if the neutralino is primarily gaugino. On
the other hand, our results should have little effect on calculations of the
cosmological abundance of neutralinos. We also briefly discuss implications for
cosmic-ray antiprotons from neutralino annihilation in the galactic halo.

2
The categories of this paper are: math
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics