Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of forward Z+jet production in pp collisions at $\sqrt{s} = 7$ TeV   A measurement of the $Z(\rightarrow\mu^+\mu^-)$+jet production cross-section
in $pp$ collisions at a centre-of-mass energy $\sqrt{s} = 7$ TeV is presented.
The analysis is based on an integrated luminosity of $1.0\,\text{fb}^{-1}$
recorded by the LHCb experiment. Results are shown with two jet transverse
momentum thresholds, 10 and 20 GeV, for both the overall cross-section within
the fiducial volume, and for six differential cross-section measurements. The
fiducial volume requires that both the jet and the muons from the Z boson decay
are produced in the forward direction ($2.0<\eta<4.5$). The results show good
agreement with theoretical predictions at the second-order expansion in the
coupling of the strong interaction.

22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat