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>Asymmetries and Constraints on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>sin</mml:mi><mml:mo></mml:mo><mml:mo stretchy="false">(</mml:mo><mml:mn>2</mml:mn><mml:mi>β</mml:mi><mml:mo>+</mml:mo><mml:mi>γ</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>with Partial Reconstruction of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>B</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>D</mml:mi><mml:mrow><mml:mo>*</mml:mo><mml:mo>∓</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mi>π</mml:mi><mml:mo>±</mml:mo></mml:msup></mml:math>Decays

We present a measurement of time-dependent $CP$-violating asymmetries in decays of neutral $B$ mesons to the final states ${D}^{*\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, using approximately $82\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events recorded by the BABAR experiment at the PEP-II ${e}^{+}{e}^{\ensuremath{-}}$ storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high-momentum ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ from the $B$ decay and the low-momentum ${\ensuremath{\pi}}^{\ensuremath{\mp}}$ from the ${D}^{*\ensuremath{\mp}}$ decay are used. We measure the amplitude of the asymmetry to be $\ensuremath{-}0.063\ifmmode\pm\else\textpm\fi{}0.024(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.014(\mathrm{syst})$ and compute bounds on $|\mathrm{sin}(2\ensuremath{\beta}+\ensuremath{\gamma})|$.

Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.