Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploring the transverse spin structure of the nucleon   We discuss our present understanding of the transverse spin structure of the
nucleon and of related properties originating from parton transverse motion.
Starting from the transversity distribution and the ways to access it, we then
address the role played by spin and transverse momentum dependent (TMD)
distributions in azimuthal and transverse single spin asymmetries. The latest
extractions of the Sivers, Collins and transversity functions are also
presented.

22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom