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Internal Note and Article
Report number LHCb-PROC-2022-001 ; CERN-LHCb-PROC-2022-001
Title Charm baryons at LHCb
Author(s) Seman Bobulska, Dana (University of Glasgow (GB))
Collaboration LHCb Collaboration
To be published in: PoS CHARM2020 (2021) 030
Submitted to 10th International Workshop on Charm Physics (CHARM 2020), Online, Mexico, 31 May - 4 June 2021, pp.030
DOI 10.22323/1.385.0030
Submitted by lhcb.secretariat@cern.ch on 06 Jan 2022
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The LHCb experiment collected the world's largest sample of charmed hadrons during LHC Run 1 and Run 2. With this data set, LHCb is currently providing the world's most precise measurements of properties and production of known charmed baryons, as well as searching for many previously unobserved states. The latest results on the charmed baryons described in this document include the lifetime measurement of the Ωc0 and Ξc0 baryons that are produced directly from proton-proton collisions and reconstructed in the pKKπ+ final state. The Ωc0 lifetime is measured to be 276.5±13.4(stat)±4.4(syst)±0.7(D0)fs and the Ξc0 lifetime to be 148.0±2.3(stat)±2.2(syst)±0.2(D0)fs. Both results are consistent with the previous LHCb measurement based on semileptonic decays of b-hadrons. The latest results on the charm baryons from the LHCb collaboration also include searches for the Ξcc+ baryon in the Ξcc+Ξc+ππ+ decay, the first search for the Ωcc+ baryon in the Ωcc+Ξc+Kπ+ decay, and the searches for the Ξbc0 and Ωbc0 baryons in the Λc+π and Ξc+π final states. No significant signals are found for neither of these decays, therefore upper limits are set on the ratio of production cross-sections times the ratio of branching fractions with respect to their normalisation decay.
Copyright/License publication: © 2021-2025 The author(s) (License: CC-BY-NC-ND-4.0)
Related document Slides LHCb-TALK-2021-110

Corresponding record in: Inspire
Email contact(s) : dana.bobulska@cern.ch


 Record created 2022-01-06, last modified 2022-08-04


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