Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transversity quark distributions in a covariant quark-diquark model   Transversity quark light-cone momentum distributions are calculated for the
nucleon. We utilize a modified Nambu--Jona-Lasinio model in which confinement
is simulated by eliminating unphysical thresholds for nucleon decay into
quarks. The nucleon bound state is obtained by solving the relativistic Faddeev
equation in the quark-diquark approximation, where both scalar and axial-vector
diquark channels are included. Particular attention is paid to comparing our
results with the recent experimental extraction of the transversity
distributions by Anselmino et al. We also compare our transversity results with
earlier spin-independent and helicity quark distributions calculated in the
same approach.

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The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin