${{\mathit D}^{0}}$ $\mathit CP$-VIOLATING DECAY-RATE ASYMMETRIES

This is the difference between ${{\mathit D}^{0}}$ and ${{\overline{\mathit D}}^{0}}$ partial widths for the decay to state ${{\mathit f}}$, divided by the sum of the widths:$
$ $\mathit A_{CP}({{\mathit f}}$) = [$\Gamma $( ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit f}}$) $−$ $\Gamma $( ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\overline{\mathit f}}}$)] $/$ [$\Gamma $( ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit f}}$) + $\Gamma $( ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\overline{\mathit f}}}$)].

$\mathit A_{CP}({{\mathit K}^{-}}{{\mathit \pi}^{+}}$) in ${{\mathit D}}_{CP(\pm1)}$ $\rightarrow$ ${{\mathit K}^{\mp}}{{\mathit \pi}^{\pm}}$

INSPIRE   PDGID:
S032A72
$\mathit A_{CP}({{\mathit K}^{-}}{{\mathit \pi}^{+}}$) = [B(${{\mathit D}}_{CP(−)}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$) $−$ B(${{\mathit D}}_{CP(+)}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$)] $/$ Sum
VALUE (%) DOCUMENT ID TECN  COMMENT
$\bf{ 13.1 \pm1.0 }$ OUR AVERAGE
$13.2$ $\pm1.1$ $\pm0.7$ 1
ABLIKIM
2022BM
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \psi}{(3770)}}$
$13.0$ $\pm1.2$ $\pm0.8$ 2
ABLIKIM
2022BM
 BES3 ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ reference
• • We do not use the following data for averages, fits, limits, etc. • •
$12.7$ $\pm1.3$ $\pm0.7$ 3
ABLIKIM
2014C
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$, 3.77 GeV
1  ABLIKIM 2022B uses quantum correlations in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$ at the ${{\mathit \psi}{(3770)}}$ to measure the asymmetry of the branching fraction of ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ in $\mathit CP$-odd and $\mathit CP$-even eigenstates. It then extracts the strong-phase difference ${{\mathit \delta}}_{{{\mathit K}} {{\mathit \pi}}}$.
2  ABLIKIM 2022B uses quantum correlations in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$ at the ${{\mathit \psi}{(3770)}}$ to measure the asymmetry of the branching fraction of ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ in $\mathit CP$-odd and $\mathit CP$-even eigenstates, using the predominantly CP-even decay ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ mode as reference. It then extracts the strong-phase difference ${{\mathit \delta}}_{{{\mathit K}} {{\mathit \pi}}}$.
3  ABLIKIM 2014C uses quantum correlations in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\overline{\mathit D}}^{0}}$ at the ${{\mathit \psi}{(3770)}}$ to measure the asymmetry of the branching fraction of ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}$ in $\mathit CP$-odd and $\mathit CP$-even eigenstates. It then extracts the strong-phase difference ${{\mathit \delta}}_{{{\mathit K}} {{\mathit \pi}}}$. Superseded by ABLIKIM 2022BM.
Conservation Laws:
$\mathit CP$ INVARIANCE
References