We report the first measurement of the absolute branching fraction of the inclusive decay Λc+→KS0X. The analysis is performed using an e+e- collision data sample corresponding to an integrated luminosity of 567 pb - 1 taken at s = 4.6 GeV with the BESIII detector. Using eleven Cabibbo-favored Λ¯c- decay modes and the double-tag technique, this absolute branching fraction is measured to be B(Λc+→KS0X)=(9.9±0.6±0.4)%, where the first uncertainty is statistical and the second systematic. The relative deviation between the branching fractions for the inclusive decay and the observed exclusive decays is (18.7 ± 8.3) % , which indicates that there may be some unobserved decay modes with a neutron or excited baryons in the final state.
Measurement of the absolute branching fraction of the inclusive decay Λc+→KS0X : (BESIII Collaboration)
Garzia I.;
2020
Abstract
We report the first measurement of the absolute branching fraction of the inclusive decay Λc+→KS0X. The analysis is performed using an e+e- collision data sample corresponding to an integrated luminosity of 567 pb - 1 taken at s = 4.6 GeV with the BESIII detector. Using eleven Cabibbo-favored Λ¯c- decay modes and the double-tag technique, this absolute branching fraction is measured to be B(Λc+→KS0X)=(9.9±0.6±0.4)%, where the first uncertainty is statistical and the second systematic. The relative deviation between the branching fractions for the inclusive decay and the observed exclusive decays is (18.7 ± 8.3) % , which indicates that there may be some unobserved decay modes with a neutron or excited baryons in the final state.File | Dimensione | Formato | |
---|---|---|---|
Ablikim2020_Article_MeasurementOfTheAbsoluteBranch.pdf
accesso aperto
Descrizione: Full text editoriale
Tipologia:
Full text (versione editoriale)
Licenza:
Creative commons
Dimensione
951.4 kB
Formato
Adobe PDF
|
951.4 kB | Adobe PDF | Visualizza/Apri |
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.