期刊
PHYSICAL REVIEW LETTERS
卷 130, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.130.071802
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An absolute measurement of the A+c lifetime is reported using A+c -> pK-pi+ decays in Belle II experiment data. The data sample, collected at center-of-mass energies at or near the (sic)(4S) resonance, has a total integrated luminosity of 207.2 fb(-1). The result, tau(Lambda(+)(c)) = 203.20 10.89 10.77 fs, is the most precise measurement to date and is consistent with previous determinations.
An absolute measurement of the A+c lifetime is reported using A+c -> pK-pi+ 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 (sic)(4S) resonance, is 207.2 fb(-1). The result, tau(Lambda(+)(c)) = 203.20 10.89 10.77 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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