Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for Rare and Forbidden Charm Meson Decays D0--> V l+ l- and h h l
  l   We report the results of a search for flavor-changing neutral current,
lepton-flavor, and lepton-number violating decays of the 3 and 4-body decay
modes of D0 (and its antiparticle) containing muons and electrons. Using data
from Fermilab charm hadroproduction experiment E791, we examine modes with two
leptons and either a Rho(0), Kstar, or Phi vector meson or a non-resonant Pi
Pi, K Pi, or K K pair of pseudoscalar mesons. No evidence for any of these
decays is found. Therefore, we present branching-fraction upper limits at 90%
confidence level for the 27 decay modes examined (18 new).

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The categories of this paper are: atom-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: cs
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The categories of this paper are: nucl-th
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg