Measurement of the lifetimes of promptly produced $Ω^{0}_{c}$ and $Ξ^{0}_{c}$ baryons

collaboration, LHCb, Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellán, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA
et al (show 994 more authors) (2022) Measurement of the lifetimes of promptly produced $Ω^{0}_{c}$ and $Ξ^{0}_{c}$ baryons. Science Bulletin 2022, 67(5): 479-487, 67 (5). pp. 479-487.

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A measurement of the lifetimes of the $\Omega^{0}_{c}$ and $\Xi^{0}_{c}$ baryons is reported using proton-proton collision data at a centre-of-mass energy of $13\text{ TeV}$, corresponding to an integrated luminosity of $5.4\text{ fb}^{-1}$ collected by the LHCb experiment. The $\Omega^{0}_{c}$ and $\Xi^{0}_{c}$ baryons are produced directly from proton interactions and reconstructed in the $pK^{-}K^{-}\pi^{+}$ final state. The $\Omega^{0}_{c}$ lifetime is measured to be $276.5\pm13.4\pm4.4\pm0.7\text{ fs}$, and the $\Xi^{0}_{c}$ lifetime is measured to be $148.0\pm2.3\pm2.2\pm0.2\text{ fs}$, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the $D^{0}$ lifetime. These results confirm previous LHCb measurements based on semileptonic beauty-hadron decays, which disagree with earlier results of a four times shorter $\Omega^{0}_{c}$ lifetime, and provide the single most precise measurement of the $\Omega^{0}_{c}$ lifetime.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at (LHCb public pages)
Uncontrolled Keywords: hep-ex, hep-ex
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 May 2022 09:15
Last Modified: 16 Mar 2024 06:56
DOI: 10.1016/j.scib.2021.11.022
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