Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The one loop gluon emission light cone wave function   Light cone perturbation theory has become an essential tool to calculate
cross sections for various small-$x$ dilute-dense processes such as deep
inelastic scattering and forward proton-proton and proton-nucleus collisions.
Here we set out to do one loop calculations in an explicit helicity basis in
the four dimensional helicity scheme. As a first process we calculate light
cone wave function for one gluon emission to one-loop order in Hamiltonian
perturbation theory on the light front. We regulate ultraviolet divergences
with transverse dimensional regularization and soft divergences with using a
cut-off on longitudinal momentum. We show that when all the renormalization
constants are combined, the ultraviolet divergences can be absorbed into the
standard QCD running coupling constant, and give an explicit expression for the
remaining finite part.

37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci