Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A review of forward proton tagging at 420m at the LHC, and relevant
  results from the Tevatron and HERA   We review the theoretical and experimental motivations behind recent
proposals to add forward proton tagging detectors to the LHC experiments as a
means to search for new physics. We also review the current diffractive
programs at the Tevatron and HERA, focusing in particular on measurements which
will have a direct impact on the case for forward detectors at the LHC.

11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph