Precise Measurements of Decay Parameters and C P Asymmetry with Entangled Λ − Λ ¯ Pairs
М. Н. Ачасов, P. Adlarson, M. Albrecht, R. Aliberti et autres
Based on 10 billion $J/\ensuremath{\psi}$ events collected at the BESIII experiment, a search for $CP$ violation in $\mathrm{\ensuremath{\Lambda}}$ decay is performed in the difference between $CP$-odd decay parameters ${\ensuremath{\alpha}}_{\ensuremath{-}}$ for $\mathrm{\ensuremath{\Lambda}}\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${\ensuremath{\alpha}}_{+}$ for $\overline{\mathrm{\ensuremath{\Lambda}}}\ensuremath{\rightarrow}\overline{p}{\ensuremath{\pi}}^{+}$ by using the process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}\overline{\mathrm{\ensuremath{\Lambda}}}$. With a …
cn, ru, se, de, it, pl, mn, us, tr, gb (code pays fourni par la source)