Measurement of the ${\Omega }_c^0$ lifetime at Belle II

Abstract

We report on a measurement of the ${\Omega }_c^0$ lifetime using ${\Omega }_c^0\to {\Omega }^{-}{\pi }^{+}$ decays reconstructed in $e^{+}{e}^{-}\to c\bar{c}$ data collected by the Belle II experiment and corresponding to $207\mathrm{f}{\mathrm{b}}^{-1}$ of integrated luminosity. The result, $\tau ({\mathrm{\Omega }}_{\mathrm{c}}^0)=243\pm 48(\mathrm{stat})\pm 11(\mathrm{syst})\mathrm{fs}$, agrees with recent measurements indicating that the ${\Omega }_c^0$ is not the shortest-lived weakly decaying charmed baryon.

arXiv commentAccepted for publication in Phys. Rev. D Letters

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• SuperKEKB Collider
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Cited by in corpus (1)

• Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the ${\Omega }_c^0$ Baryon