Based on e+e− collision data corresponding to an integrated luminosity of 4.5 fb−1 collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII, the absolute branchingfractionoftheinclusivedecayΛ ̄−c →nbar+X,where X refers to any possible final state particles, is measured. The absolute branching fraction is determined to be B(Λ ̄−c →nbar+X)=(32.4 pm 0.7 pm 1.5)%, where the first uncertainty is statistical and the second systematic. Assuming CP symmetry, the measurement indicates that about one fourth of Λ+c (Λ ̄−c) decay modes with a neutron(anantineutron) in the final state have not been observed

Measurement of the absolute branching fraction of the inclusive decay Λ ̄c− →n ̄+X

Garzia I.;Scodeggio M.;
2023

Abstract

Based on e+e− collision data corresponding to an integrated luminosity of 4.5 fb−1 collected at the center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII, the absolute branchingfractionoftheinclusivedecayΛ ̄−c →nbar+X,where X refers to any possible final state particles, is measured. The absolute branching fraction is determined to be B(Λ ̄−c →nbar+X)=(32.4 pm 0.7 pm 1.5)%, where the first uncertainty is statistical and the second systematic. Assuming CP symmetry, the measurement indicates that about one fourth of Λ+c (Λ ̄−c) decay modes with a neutron(anantineutron) in the final state have not been observed
2023
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, X. H.; Bai, Y.; Bakina, O.; Baldini Ferrol...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2530501
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