Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Like-sign dilepton signals from a leptophobic Z' boson   A new leptophobic neutral gauge boson Z' with small mixing to the Z can have
a mass as light as M_Z' ~ 350 GeV, and still have escaped detection at LEP and
Tevatron. Such a Z' boson can be derived from E6 and, if the new heavy neutrino
singlets in the 27 representation are lighter than M_Z'/2, the process p
p(pbar) -> Z' -> NN -> l+- l+- X is observable. Indeed, this new signal could
explain the small excess of like-sign dileptons found at Tevatron. Implications
for LHC are also discussed. In particular, the Tevatron excess could be
confirmed with less than 1 fb-1, and leptophobic Z' masses up to 2.5 TeV can be
probed with 30 fb-1.

16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
3
The categories of this paper are: physics