Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Summary of the Extensions of the Standard Model Working Group   We summarize the results of the extended gauge group working group of the
Madison-Argonne Workshop on Present and Future Colliders. Contributions are
described on the previously unexamined two photon fusion production of heavy
leptons, new studies of $Z'$ couplings to $\nu \bar{\nu}$ and $q\bar{q}$, and
previously unexplored vector leptoquark production. More detailed accounts of
these studies can be found in individual contributions.

7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph