English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a measurement of $D^0$-$\bar{D^0}$ mixing parameters using theratios of lifetimes extracted from a sample of $D^0$ mesons produced throughthe process $D^{*+}\to\D^0\pi^+$, that decay to $K^{+}\pi^{-}$, K^{-}K^{+}$, or$\pi^-\pi^+$. The Cabibbo-suppressed modes $K^{-}K^{+}$ and $\pi^-\pi^+$ arecompared to the Cabibbo-favored mode $K^{+}\pi^{-}$ to obtain a measurement of$y_{CP}$, which in the limit of CP conservation corresponds to the mixingparameter $y$. The analysis is based on a data sample of 384 $fb^{-1}$collected by the $BaBar$ detector at the PEP-II asymmetric-energy $e^+e^-$collider. We obtain $y_{CP} = [1.24\pm 0.39\mathrm{(stat)} \pm0.13\mathrm{(syst)}]%$, which is evidence of $D^0$-$\bar{D^0}$ mixing at the$3\sigma$ level, and $\Delta Y = [-0.26\pm 0.36\mathrm{(stat)} \pm 0.08\mathrm{(syst)}]%$, where $\Delta Y$ constrains possible CP violation.Combining this result with a previous $BaBar$ measurement of $y_{CP}$ obtainedfrom a separate sample of $D^0\to K^{-}K^{+}$ events, we obtain $y_{CP} =[1.03\pm 0.33 \mathrm{(stat)} \pm 0.19 \mathrm{(syst)}]%$.

Measurement of D0-anti-D0 Mixing using the Ratio of Lifetimes for the Decays D0 --> K-pi+, K-K+, and pi-pi+