Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First test of Lepton Flavor Universality in the charmed baryon decays
  $\Omega^{0}_{c} \to \Omega^{-} \ell^{+} \nu_{\ell}$ using data of the Belle
  experiment   We present the first observation of the $\Omega_{c}^{0} \to \Omega^{-}
\mu^{+} \nu_{\mu}$ decay and present measurements of the branching fraction
ratios of the $\Omega_{c}^{0} \to \Omega^{-} \ell^{+} \nu_{\ell}$ decays
compared to the reference mode $\Omega_{c}^{0} \to \Omega^{-} \pi^+$, ($\ell =
e$ or $\mu$). This analysis is based on 89.5 fb$^{-1}$, 711 fb$^{-1}$, and
121.1 fb$^{-1}$ data samples collected with the Belle detector at the KEKB
asymmetric-energy $e^+e^-$ collider at the center-of-mass energies of 10.52
GeV, 10.58 GeV, and 10.86 GeV, respectively. The $\Omega_{c}^{0}$ signal yields
are extracted by fitting $M_{\Omega^{-} \ell^{+}}$ and $M_{\Omega^{-}\pi^+}$
spectra. The branching fraction ratios ${\cal B}(\Omega_{c}^{0} \to \Omega^{-}
e^{+} \nu_{e})/{\cal B}(\Omega_{c}^{0} \to \Omega^{-} \pi^+)$ and ${\cal
B}(\Omega_{c}^{0} \to \Omega^{-} \mu^{+} \nu_{\mu})/{\cal B}(\Omega_{c}^{0} \to
\Omega^{-} \pi^+)$ are measured to be $1.98 \pm0.13~({\rm stat.}) \pm
0.08~({\rm syst.})$ and $ 1.94 \pm 0.18~({\rm stat.}) \pm 0.10~({\rm syst.})$,
respectively. The ratio of ${\cal B}(\Omega_{c}^{0} \to \Omega^{-} e^{+}
\nu_{e})/{\cal B}(\Omega_{c}^{0} \to \Omega^{-} \mu^{+} \nu_{\mu})$ is measured
to be $1.02 \pm 0.10~({\rm stat.}) \pm 0.02~({\rm syst.})$, which is consistent
with the expectation of lepton flavor universality.

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The categories of this paper are: funct-an
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
9
The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: econ
10
The categories of this paper are: q-bio