Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Time-independent Way to Probe D^0-\bar D^0 Mixing at Tau-charm
  Factories   $D^0-\bar{D}^0$ mixing leads to the mass and width differences in the mass
eigenstates of $D^0$ and $\bar{D}^0$ mesons (measured by parameters $x^{~}_D$
and $y^{~}_D$ respectively), but their magnitudes cannot be reliably predicted
by the standard model. We show that it is possible to separately determine
$x^{~}_D$ and $y^{~}_D$ through {\it time-integrated} measurements of the
dilepton events of coherent $D^0\bar{D}^0$ decays on the $\psi(4.14)$ resonance
at a $\tau$-charm factory.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: cs