Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bounds on the electromagnetic interactions of excited spin-3/2 leptons   We discuss possible deviations from QED produced by a virtual excited
spin-3/2 lepton in the reaction $e^+e^- \longrightarrow 2\gamma$. Data recorded
by the OPAL Collaboration at a c.m. energy $\sqrt{s} = 183 GeV$ are used to
establish bounds on the nonstandard-lepton mass and coupling strengths.

33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol