Kavli Affiliate: T. Higuchi
| First 5 Authors: , , , ,
| Summary:
An absolute measurement of the $Lambda^+_c$ lifetime is reported using
$Lambda_c^+rightarrow pK^-pi^+$ 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 $Upsilon(4S)$
resonance, is $207.2~mboxfb^-1$. The result, $tau(Lambda^+_c) = 203.20
pm 0.89 ,mathrm(stat) pm 0.77 ,mathrm(syst)$ fs, is the most precise
measurement to date and is consistent with previous determinations.
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