Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transversity and intrinsic motion of the constituents   The probabilistic model of parton distributions, previously developed by one
of the authors, is generalized to include the transversity distribution. When
interference effects are attributed to quark level only, the intrinsic quark
motion produces the transversity, which is about twice as large as the usual
polarized distribution. The applicability of such a picture is considered and
possible corrections, accounting for interference effects at the parton-hadron
transition stage are discussed.

36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess