Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarized structure functions in a constituent quark scenario   Using a simple picture of the constituent quark as a composite system of
point-like partons, we construct the polarized parton distributions by a
convolution between constituent quark momentum distributions and constituent
quark structure functions. Using unpolarized data to fix the parameters we
achieve good agreement with the polarization experiments for the proton, while
not so for the neutron. By relaxing our assumptions for the sea distributions,
we define new quark functions for the polarized case, which reproduce well the
proton data and are in better agreement with the neutron data. When our results
are compared with similar calculations using non-composite constituent quarks
the accord with the experiments of the present scheme is impressive. We
conclude that, also in the polarized case, DIS data are consistent with a low
energy scenario dominated by composite constituents of the nucleon.

8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex