000002802 001__ 2802
000002802 005__ 20220921191411.0
000002802 037__ $$aBELLE2-CONF-PROC-2021-024
000002802 041__ $$aeng
000002802 100__ $$aNisar Nellikunnummel
000002802 245__ $$aPrecise measurements of the $D$ meson lifetimes
000002802 260__ $$a$$c2021-12-10
000002802 300__ $$amult. p
000002802 520__ $$aWe report the result of $D^0$ and $D^+$ lifetime measurement using $\Dz$ and $\Dp $ decays reconstructed using $72~{\rm fb^{-1}}$ of data collected by the Belle II experiment at SuperKEKB asymmetric-energy $e^+e^−$ collider. The results, $\tau(D^0)=410.5\pm1.1({\rm stat})\pm0.8({\rm syst})~{\rm fs}$ and $\tau(D^+)=1030.4\pm4.7({\rm stat})\pm 3.1({\rm syst})~{\rm fs}$ are the most precise to date and are consistent with previous measurements.
000002802 8560_ $$fnnellikun@bnl.gov
000002802 8564_ $$uhttps://docs.belle2.org/record/2802/files/PANIC_Proceed_nisar.pdf