Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-perturbative parton mass for the gluon   A gauge invariant, non-local observable is constructed in pure gauge theory,
which is identical to the gluon propagator in a particular gauge, permitting to
define a non-perturbative parton mass for the gluon. This mass can be shown to
be related to the 1P-1S mass splitting of heavy quarkonia. Preliminary
numerical results for 3d SU(2) yield m_A=0.37(6)g^2, while from the \bar{b}b
spectrum one infers m_A\approx 420 MeV for QCD.

35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga