Prefer a chat interface with context about you and your work?
Measurement of time-dependent <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math> violation in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:msubsup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:…
We report a measurement of time-dependent $CP$ violation in ${B}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ decays using a data sample of $772\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }B\overline{B}$ pairs collected by the Belle experiment running at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. This decay proceeds mainly via a $b\ensuremath{\rightarrow}sd\overline{d}$ ``penguin'' amplitude. The results are $\mathrm{sin}2{\ensuremath{\phi}}_{1}^{\text{eff}}=0.9{2}_{\ensuremath{-}0.31}^{+0.27}$ (stat.) $\ifmmode\pm\else\textpm\fi{}0.11$ …