Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ascertaining the origin of the $l\nu l\nu$ excess events at the LHC by a
  change of beam energy   A higher than predicted rate of two leptons plus missing transverse energy
events, reported at the summer HEP conferences, can originate from a decay of
the Higgs boson into a $WW^{(*)}$ pair, a misjudgement of the rate of SM
background processes or a statistical fluctuation. In this paper we discuss a
way to resolve this three-fold ambiguity.

15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom