Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparison of kaon and pion valence quark distributions in a statistical
  model   We have calculated the Bjorken-x dependence of the kaon and pion valence
quark distributions in a statistical model. Each meson is described by a Fock
state expansion in terms of quarks, antiquarks and gluons. Although Drell-Yan
experiments have measured the pion valence quark distributions directly, the
kaon valence quark distributions have only been deduced from the measurement of
the ratio $\bar{u}_K(x)/\bar{u}_\pi(x)$. We show that, using no free
parameters, our model predicts the decrease of this ratio with increasing x.

21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg