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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report a measurement of the mixing-induced and direct $\textit{CP}$violation parameters $S_{\text{CP}}$ and $A_{\text{CP}}$ from $B^0 \to J/\psiK^0_S$ decays reconstructed by the Belle II experiment at the SuperKEKBasymmetric-energy electron-positron collider. The data, collected at thecenter-of-mass energy of the $\Upsilon(4S)$ resonance, correspond to$190\text{fb}^{-1}$ of integrated luminosity. We measure ${S_{\text{CP}} =0.720\pm0.062\pm0.016}$ and $A_{\text{CP}} = 0.094\pm0.044^{+0.042}_{-0.017}$,where the first uncertainties are statistical and the second systematic. In theStandard Model, $S_{\text{CP}}$ equals $\sin(2\phi_1)$ to a good approximation.

Measurement of decay-time-dependent $\textit{CP}$ violation in $B^0 \to J/\psi K^0_S$ decays using 2019-2021 Belle II data