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

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

$\mathit A_{\mathit CP}$( ${{\mathit \pi}^{\pm}}{{\mathit \eta}^{\,'}{(958)}}$ ) in ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \eta}^{\,'}{(958)}}$

INSPIRE   PDGID:
S031A13
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.6 \pm0.7 }$ OUR AVERAGE
$-0.61$ $\pm0.72$ $\pm0.54$ 63k
AAIJ
2017AF
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$-0.12$ $\pm1.12$ $\pm0.17$
WON
2011
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4S)}}$
$-4.0$ $\pm3.4$ $\pm0.3$ 1.0k
MENDEZ
2010
CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 3774 MeV
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2017AF
PL B771 21 Measurement of $\mathit CP$ Asymmetries in ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{\pm}}$ and ${{\mathit D}_{{s}}^{\pm}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{\pm}}$ Decays
WON 2011
PRL 107 221801 Observation of ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \eta}^{{(')}}}$ and Search for $\mathit CP$ Violation in ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \eta}^{+}}{{\mathit \eta}^{{(')}}}$ Decays
MENDEZ 2010
PR D81 052013 Measurements of ${{\mathit D}}$ Meson Decays to Two Pseudoscalar Mesons