Measurement of the Λ_{c}
Phys Rev Lett
; 130(7): 071802, 2023 Feb 17.
Article
em En
| MEDLINE
| ID: mdl-36867815
ABSTRACT
An absolute measurement of the Λ_{c}^{+} lifetime is reported using Λ_{c}^{+}âpK^{-}π^{+} decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the Ï(4S) resonance, is 207.2 fb^{-1}. The result, τ(Λ_{c}^{+})=203.20±0.89±0.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.
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MEDLINE
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En
Ano de publicação:
2023
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Article