Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic suppression of the decay mu --> e+gamma   Due to large QED anomalous dimensions of the electric and magnetic dipole
operators, the rate of the rare muon decay mu --> e+gamma is suppressed by the
factor [ 1- 8 alpha/pi ln(Lambda/m_mu) ], independent of the physics
responsible for the lepton-flavor violation, except for the scale Lambda at
which it occurs. For Lambda = 100 -- 1000 GeV, the resulting decrease of the
rate amounts to about 12 -- 17 %.

29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg