Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Restoring good high energy behaviour in Higgs production via W fusion at
  the LHC   The W-fusion scattering process W+W- --> ZZ for off-shell W bosons is
studied, focusing on the issue of its high-energy behaviour which is known to
be anomalous. It is shown that the unitarity violating terms can be isolated
and extracted in a well-defined and efficient way using the pinch-technique.
This restores the good high energy behaviour of the cross section and, in
particular, makes possible the identification of the Higgs resonance in the
invariant mass distribution M(ZZ) of the Z pair. The discarded terms, which are
proportional to the off-shellness of the W bosons, cancel against similar terms
originating from the remaining diagrams for the full physical process f1 f2 -->
f1' f2' Z Z. This cancellation ensures the gauge invariance of our result,
which therefore constitutes a meaningful separation between signal and
background when they both contribute coherently. Equipped with this result, we
are able to define a resonant approximation for the process p p --> Z Z + 2
jets + X, which circumvents the problem of good high energy behaviour without
having to resort to the lengthy calculation of the complete set of diagrams. In
this approximation only the W and Z fusion signal graphs are included, i.e. the
ones which contain the Higgs resonance. We have verified that the approximate
resonant cross section describes very well the full result not only close to
the resonance but also beyond it.

10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an