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 $207~{\rm fb^{-1}}$ of integrated luminosity. The result, $\rm\tau(\Omega_c^0)=243\pm48( stat)\pm11(syst)~fs$, agrees with recent measurements indicating that the $\Omega_c^0$ is not the shortest-lived weakly decaying charmed baryon.
Tags
Working group Charm
Principal authors @  Angelo Di Canto, Nisar Nellikunnummel
Reference Phys.Rev.D 107, L031103 (2023), DOI: 10.1103/PhysRevD.107.L031103
Document BELLE2-PUB-PH-2022-007
Links arXiv:2208.08573, Inspire, PRD
Bibtex 
@article{Belle-II:2022plj,
    author = "Abudinen, Fernando Jesus and others",
    collaboration = "Belle-II",
    title = "{Measurement of the {\ensuremath{\Omega}}c0 lifetime at Belle II}",
    eprint = "2208.08573",
    archivePrefix = "arXiv",
    primaryClass = "hep-ex",
    reportNumber = "Belle II Preprint 2022-005, KEK Preprint 2022-26",
    doi = "10.1103/PhysRevD.107.L031103",
    journal = "Phys. Rev. D",
    volume = "107",
    number = "3",
    pages = "L031103",
    year = "2023"
}