Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The use of the tau in new particle searches at DELPHI   Several new particle searches have been performed in the DELPHI experiment
involving tau leptons in the resulting final state. The topology and special
characteristics of the tau leptons have been used to discriminate the signal
from the Standard Model background. Limits on new particles have been set,
playing an important role the channels with tau leptons.

19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg