Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TMD evolution of the Sivers asymmetry   The energy scale dependence of the Sivers asymmetry in semi-inclusive deep
inelastic scattering is studied numerically within the framework of TMD
factorization that was put forward in 2011. The comparison to previous results
in the literature shows that the treatment of next-to-leading logarithmic
effects is important for the fall-off of the Sivers asymmetry with energy in
the measurable regime. The TMD factorization based approach indicates that the
peak of the Sivers asymmetry falls off with energy scale Q to good
approximation as 1/Q^{0.7}, somewhat faster than found previously based on the
first TMD factorization expressions by Collins and Soper in 1981. It is found
that the peak of the asymmetry moves rather slowly towards higher transverse
momentum values as $Q$ increases, which may be due to the absence of
perturbative tails of the TMDs in the presented treatments. We conclude that
the behavior of the peak of the asymmetry as a function of energy {\it and}
transverse momentum allows for valuable tests of the TMD formalism and the
considered approximations. To confront the TMD approach with experiment, high
energy experimental data from an Electron-Ion Collider is required.

7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph