Kavli Affiliate: T. Higuchi
| First 5 Authors: Belle II collaboration, F. Abudinén, I. Adachi, K. Adamczyk, L. Aggarwal
| Summary:
We report a measurement of the $D^0$ and $D^+$ lifetimes using $D^0to
K^-pi^+$ and $D^+to K^-pi^+pi^+$ decays reconstructed in $e^+e^-to
cbar{c}$ data recorded by the Belle II experiment at the SuperKEKB
asymmetric-energy $e^+e^-$ collider. The data, collected at center-of-mass
energies at or near the $Upsilon(4S)$ resonance, correspond to an integrated
luminosity of $72,{rm fb}^{-1}$. The results, $tau(D^0) =
410.5pm1.1,{rm(stat)}pm0.8,{rm(syst.)},{rm fs}$ and $tau(D^+) =
1030.4pm4.7,{rm(stat)}pm3.1,{rm(syst.)},{rm fs}$, are the most precise
to date and are consistent with previous determinations.
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