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

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

INSPIRE   PDGID:
S032A3
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.20 \pm0.17 }$ OUR AVERAGE
$-0.21$ $\pm0.16$ $\pm0.07$ 467k 1
NISAR
2014
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at/near ${{\mathit \Upsilon}}$'s
$0.1$ $\pm1.3$ 9099
BONVICINI
2001
CLE2 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}$ $10.6$ GeV
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.28$ $\pm0.19$ $\pm0.10$ 326k
KO
2011
BELL See NISAR 2014
$-1.8$ $\pm3.0$
BARTELT
1995
CLE2 See BONVICINI 2001
1  After subtracting CPV in ${{\mathit K}^{0}}−{{\overline{\mathit K}}^{0}}$ mixing, NISAR 2014 gets $\mathit A_{CP}$ = ($+0.12$ $\pm0.16$ $\pm0.07)\%$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
NISAR 2014
PRL 112 211601 Search for $\mathit CP$ Violation in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ Decays
KO 2011
PRL 106 211801 Search for $\mathit CP$ Violation in the Decays ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit P}^{0}}$
BONVICINI 2001
PR D63 071101 Search for $\mathit CP$ Violation in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$ and ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ and ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ Decays
BARTELT 1995
PR D52 4860 Search for $\mathit CP$ Violation in ${{\mathit D}^{0}}$ Decay