Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD uncertainties at the LHC and the implications of HERA   Strong interaction physics will be ubiquitous at the Large Hadron Collider
since the colliding beams consist of confined quarks and gluons. Although the
main purpose of the LHC is to study the mechanism of electroweak symmetry
breaking and to search for physics beyond the Standard Model, to maximise the
precision and sensitivity of such anaylses it is necessary to understand in
detail various perturbative, semi-perturbative and non-perturbative QCD
effects. Many of these effects have been extensively studied at HERA and will
be studied further at HERA II. We discuss the impact of the knowledge thus
gained on physics at the LHC.

15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci