The first observation and study of two new baryonic structures in the final state Xib0pi+pi- and the confirmation of the Xib(6100)- state in the Xib-pi+pi- decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. In addition, the properties of the known Xib*0, Sigmab'- and Sigmab*- resonances are measured with improved precision. The new decay mode of the Sigmab0 baryon to the Sigmac+ pi- pi+ pi- final state is observed and exploited for the first time in these measurements.
Observation of New Baryons in the Xib- pi+pi- and Xib0 pi+pi- Systems
Bassi G.Membro del Collaboration Group
;Kleijne N.Membro del Collaboration Group
;Morello M. J.Membro del Collaboration Group
;Pica L.Membro del Collaboration Group
;Ribatti R.Membro del Collaboration Group
;
2023
Abstract
The first observation and study of two new baryonic structures in the final state Xib0pi+pi- and the confirmation of the Xib(6100)- state in the Xib-pi+pi- decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. In addition, the properties of the known Xib*0, Sigmab'- and Sigmab*- resonances are measured with improved precision. The new decay mode of the Sigmab0 baryon to the Sigmac+ pi- pi+ pi- final state is observed and exploited for the first time in these measurements.File in questo prodotto:
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PhysRevLett.131.171901_reduced.pdf
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