Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse momentum distributions of quarks from the lattice using
  extended gauge links   We present preliminary numerical studies in Lattice QCD related to the
intrinsic transverse momentum distribution of partons in the nucleon. We employ
non-local operators, consisting of spatially separated quark creation and
annihilation operators connected by a straight Wilson line. A clear signal is
already obtained from a small number of configurations at a pion mass of about
600 MeV. As an example, we demonstrate that we can obtain the first x-moment of
the transverse momentum dependent parton distribution function f_1^{n=1}(k_T)
from our data. Our results, which are not renormalized, show a Gaussian-like
distribution. The root mean squared transverse momentum is about 560 MeV for a
Gaussian fit, close to phenomenological values.

34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph