Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quark and gluon jet properties at LEP   The study of the differences of the fragmentation of quarks and gluons to
jets of hadrons gives insight into the fundamental structure of QCD. Results
from different approaches to properties of quarks and gluons are shown. The
colour factor ratio $C_A/C_F$ is measured in agreement with the QCD prediction.
Identified particles in quark and gluon jets are investigated, revealing no
overproduction of isoscalar $\eta^0$ and $\phi(1020)$ in gluon jets, but an
excess of protons.

21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat