Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-spin asymmetries with two-hadron fragmentation functions   Using the formalism of two-hadron fragmentation functions, we discuss
single-spin asymmetries occurring in the production of two hadrons in the
current region of deep inelastic scattering, with a particular emphasis on
transversity measurements.

22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci