Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Test of SU(15) at HERA Using The HELAS Program   A possible SU(15) process at HERA is investigated. The process that we
consider is $e^- P\ra \bar\nu_e \mu^- \mu^- +anything$ through the exchange of
new heavy gauge bosons $X^-$ and $X^{--}$ which are predicted in SU(15). This
process produces two easily observable like-sign muons in the final state. The
cross section of this process is calculated by using HELAS and VEGAS programs,
and PDF-library functions. The cross section turns out to be small to be
observed in near future.

4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg