Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Next-to-next-to-eikonal corrections in the CGC   We extend the study of corrections to the eikonal approximation that was
initiated in Ref. \cite{Altinoluk:2014oxa} to higher orders. These corrections
associated with the finite width of the target are investigated and the gluon
propagator in background field is calculated at next-to-next-to-eikonal
accuracy. The result is then applied to the single inclusive gluon production
cross section at central rapidities and the light-front helicity asymmetry, in
pA collisions, in order to analyse these observables beyond the eikonal limit.
The next-to-next-to-eikonal corrections to the unpolarized cross section are
non-zero and provide the first corrections to the usual $k_\perp$-factorized
expression. In contrast, the eikonal and next-to-next-to-eikonal contributions
to the helicity asymmetry vanish, while the next-to-eikonal ones are non-zero.

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The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
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The categories of this paper are: eess
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th