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Measurements of Charmed Meson Lifetimes and Search for $D^0$-$\overline{D}^0$ Mixing with the Belle Experiment

Jun-ichi Tanaka
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Abstract

The lifetimes of charmed mesons have been measured using 11.1fb$^{-1} of data collected with the Belle detector at KEKB. Each candidate is fully reconstructed to identify the flavor of the charmed meson. The lifetimes are measured to be $τ(D^0)=(414.5\pm1.7)$ fs, $τ(D^+)=(1029\pm12)$ fs and $τ(D_s^+)=(488.4^{+7.8}_{-7.7})$ fs, where the error is statistical only. The mixing parameter $y_{CP}$ is also measured to be $y_{CP}=(1.16^{+1.67}_{-1.65}(stat.))%$ through the lifetime difference of $D^0$ mesons decaying into CP-mixed states and CP eigenstates.

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Jun-ichi Tanaka. 2001-04-30. Measurements of Charmed Meson Lifetimes and Search for $D^0$-$\overline{D}^0$ Mixing with the Belle Experiment. https://doi.org/10.1142/9789812811219_0021

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