${{\mathit D}^{0}}$ $\mathit CP$-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 $( ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\overline{\mathit f}}}$ )].

$\mathit A_{\mathit CP}$( ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ) in ${{\mathit D}^{0}}$ , ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

INSPIRE   PDGID:
S032CPK
See also AAIJ 2013BR for a search for $\mathit CP$ violation in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ in binned phase space. No evidence of $\mathit CP$ violation was found.
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1.3 \pm1.7 }$ OUR AVERAGE
$1.84$ $\pm1.74$ $\pm0.3$ 2.9k 1
DARGENT
2017
${{\mathit e}^{+}}{{\mathit e}^{-}}$
$-8.2$ $\pm5.6$ $\pm4.7$ $828$ $\pm46$
LINK
2005E
 FOCS ${{\mathit \gamma}}$ A, ${{\overline{\mathit E}}}_{\gamma }{}\approx{}$180 GeV
1  Obtained by analyzing CLEO data but not authored by the CLEO Collaboration.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
DARGENT 2017
JHEP 1705 143 Amplitude Analyses of ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Decays
LINK 2005E
PL B622 239 Search for $\mathit T$ Violation in Charm Meson Decays