Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Forward Z-boson production and the unintegrated sea quark density   Drell-Yan production in the forward region at the Large Hadron Collider is
sensitive to multiple radiation of QCD partons not collinearly ordered, emitted
over large rapidity intervals. We propose a method to take account of these
radiative contributions via a factorization formula which depends on the
unintegrated, or transverse momentum dependent, splitting function associated
with the evolution of the initial-state sea quark distribution. We analyze this
formula numerically, and point out kinematic effects from the initial-state
transverse momentum on the vector boson spectrum.

16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio