Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin and transverse momentum dependent Fracture Function in SIDIS   The recently developed leading twist formalism for spin and
transverse-momentum dependent fracture functions is shortly described. We
demonstrate that the process of double hadron production in polarized SIDIS --
with one spinless hadron produced in the current fragmentation region (CFR) and
another in the target fragmentation region (TFR) -- would provide access to all
16 leading twist fracture functions. Some particular cases are presented.

1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat