The lifetimes of the Omegac0 and Xic0 baryons are measured using a pp collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. The charm baryons are produced in the fully reconstructed decay chains Omegab- -> Omegac0->pK-K-pi+pi- and Xib- ->Xic0 ->pK-K-pi+pi-. The measurement uses topologically and kinematically similar B- -> D0(-> K-K+pi-pi+)pi- decays for normalisation. The measured lifetimes are (Formula presented.) where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the D0 lifetime. These results are consistent with previous measurements performed by the LHCb experiment.

Measurement of the Omegac0 and Xic0 baryon lifetimes using hadronic b-baryon decays

Kleijne N.
Membro del Collaboration Group
;
Morello M. J.
Membro del Collaboration Group
;
Passaro D.
Membro del Collaboration Group
;
Riccardi D.
Membro del Collaboration Group
;
Xu A.
Membro del Collaboration Group
;
2025

Abstract

The lifetimes of the Omegac0 and Xic0 baryons are measured using a pp collision dataset collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. The charm baryons are produced in the fully reconstructed decay chains Omegab- -> Omegac0->pK-K-pi+pi- and Xib- ->Xic0 ->pK-K-pi+pi-. The measurement uses topologically and kinematically similar B- -> D0(-> K-K+pi-pi+)pi- decays for normalisation. The measured lifetimes are (Formula presented.) where the first uncertainty is statistical, the second systematic and the third due to the uncertainty of the D0 lifetime. These results are consistent with previous measurements performed by the LHCb experiment.
2025
Settore FIS/01 - Fisica Sperimentale
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
Charm Physics; Flavour Physics; Hadron-Hadron Scattering; Lifetime
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/161203
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