2020年12月10日
Measurement of the Resonant and Non-Resonant Branching Ratios in $Ξ_{c}^{0} \rightarrow Ξ^{0} K^+ K^-$
Physical Review D
- 巻
- 103
- 号
- 11
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.103.112002
Using the entire data sample of $980$ $fb^{-1}$ integrated luminosity
collected with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$
collider, we present an amplitude analysis measuring the branching fractions of
the Cabibbo-allowed, $W$-exchange resonant decay $\Xi_{c}^{0} \rightarrow
\Xi^{0} \phi (\to K^+ K^-)$ with a polarized $\phi$ and the non-resonant decay
via a direct process $\Xi_{c}^{0} \rightarrow \Xi^{0} K^+ K^-$. We present
these measurements, relative to the normalization mode $\Xi^{-}\pi^{+}$, and
find branching ratios $\frac{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{0} \phi
(\rightarrow K^{+}K^{-}))}{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{-}
\pi^{+})} = 0.036 \pm 0.004 (stat.) \pm 0.002 (syst.)$ and
$\frac{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{0} K^{+}
K^{-})}{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+})} = 0.039 \pm 0.004
(stat.) \pm 0.002 (syst.)$ which suggest that only minor cusping peaks occur in
the combinatorial background of $\Omega^{*-} \to \Xi^{0}K^{-}$ due to these
$\Xi_{c}^{0}$ decays.
collected with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$
collider, we present an amplitude analysis measuring the branching fractions of
the Cabibbo-allowed, $W$-exchange resonant decay $\Xi_{c}^{0} \rightarrow
\Xi^{0} \phi (\to K^+ K^-)$ with a polarized $\phi$ and the non-resonant decay
via a direct process $\Xi_{c}^{0} \rightarrow \Xi^{0} K^+ K^-$. We present
these measurements, relative to the normalization mode $\Xi^{-}\pi^{+}$, and
find branching ratios $\frac{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{0} \phi
(\rightarrow K^{+}K^{-}))}{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{-}
\pi^{+})} = 0.036 \pm 0.004 (stat.) \pm 0.002 (syst.)$ and
$\frac{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{0} K^{+}
K^{-})}{\mathcal{B}(\Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+})} = 0.039 \pm 0.004
(stat.) \pm 0.002 (syst.)$ which suggest that only minor cusping peaks occur in
the combinatorial background of $\Omega^{*-} \to \Xi^{0}K^{-}$ due to these
$\Xi_{c}^{0}$ decays.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevD.103.112002
- arXiv
- http://arxiv.org/abs/arXiv:2012.05607
- URL
- http://arxiv.org/abs/2012.05607v1
- URL
- http://arxiv.org/pdf/2012.05607v1 本文へのリンクあり
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85108721907&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85108721907&origin=inward
- ID情報
-
- DOI : 10.1103/PhysRevD.103.112002
- ISSN : 2470-0010
- eISSN : 2470-0029
- arXiv ID : arXiv:2012.05607
- SCOPUS ID : 85108721907