Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assessing signals of TMD physics in SIDIS azimuthal asymmetries and in
  the extraction of the Sivers function   New data on the Sivers azimuthal asymmetry measured in semi-inclusive
deep-inelastic scattering processes have recently been released by the COMPASS
Collaboration at CERN. Their increased precision and their particular binning,
in terms of $Q^2$ as well as $x$, motivates a new extraction of the Sivers
function, within the framework of a simple and transparent parametrization.
Signals of TMD effects visible in the Sivers asymmetries are critically
assessed. A thorough study of the uncertainties affecting the extracted Sivers
function is presented, including the low-$x$ and large-$x$ regions.

21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con