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.| File | Dimensione | Formato | |
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JHEP09(2025)157.pdf
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