Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single and pair production of heavy leptons in $E_6$ model   We investigate the single and pair production of new heavy leptons via string
inspired $E_{6}$ model at future linear colliders. Signal and corresponding
backgrounds for these leptons are studied. We have found that single production
of heavy leptons is more relevant than that of pair production, as expected.
For a maximal mixing value of 0.1, the upper mass limits of 2750 GeV in the
single case and 1250 GeV in the pair production case are obtained at
$\sqrt{s}=3$ TeV collider option.

20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc