Measurement of the charm-mixing parameter $y_{CP}$ in $D^0\to K_S^0\omega$ decays at Belle

Abstract

We report the first measurement of the charm-mixing parameter $y_{CP}$ in $D^0$ decays to the $CP$-odd final state $K_S^0\omega$. The study uses the full Belle $e^{+}{e}^{-}$ annihilation data sample of $976\mathrm{f}{\mathrm{b}}^{-1}$ taken at or near the ${\rm Y}(4S)$ centre-of-mass energy. We find $y_{CP}=(0.96\pm 0.91\pm 0.61{}_{-0.00}^{+0.17})\%$, where the first uncertainty is statistical, the second is systematic due to event selection and background, and the last is due to possible presence of $CP$-even decays in the data sample.

arXiv comment8 pages, 2 figures

References in corpus (5)

• Measurement of D0-D0bar Mixing and CP Violation in Two-Body D0 Decays
• On the interplay of direct and indirect CP violation in the charm sector
• Measurement of D0-D0bar mixing and search for CP violation in D0 -> K+K-, pi+pi- decays with the full Belle data set
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• Measurement of the charm-mixing parameter $y_{CP}$

Cited by in corpus (4)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Mixing and $CP$ violation in the charm system
• Dispersive and Absorptive CP Violation in $D^0-\overline{D^0}$ Mixing
• Recent advances in charm mixing and $CP$ violation at LHCb