Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Muonium-Antimuonium Conversion in Models with Dilepton Gauge Bosons   We examine the magnetic field dependence of the muonium($\mu^+ e^-$) -
antimuonium($\mu^- e^+$) conversion in the models which accommodate the
dilepton gauge bosons. The effective Hamiltonian for the conversion due to
dileptons turns out to be in the $(V-A)\times(V+A)$ form and, in consequence,
the conversion probability is rather insensitive to the strength of the
magnetic field. The reduction is less than $20\%$ for up to $B \approx 300$ G
and $33\%$ even in the large $B$ limit.

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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: supr-con