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

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

INSPIRE   PDGID:
S032A10
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.1 \pm0.8 }$ OUR AVERAGE
$-0.05$ $\pm0.57$ $\pm0.54$ 350k 1
AALTONEN
2012AD
 CDF
$-0.9$ $\pm2.1$ ${}^{+1.6}_{-5.7}$ 4854 2
ASNER
2004A
 CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}$ 10 GeV
1  This is the overall result of AALTONEN 2012AD. Following are the 15 $\mathit CP$ fit-fraction asymmetries from the amplitude analysis of the ${{\mathit D}^{0}}$ and ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Dalitz plots.
2  This is the overall result of ASNER 2004A; $\mathit CP$-violating limits are also given below for each of the 10 resonant submodes found in an amplitude analysis of the ${{\mathit D}^{0}}$ and ${{\overline{\mathit D}}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Dalitz plots.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AALTONEN 2012AD
PR D86 032007 Measurement of $\mathit CP$-Violation Asymmetries in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
ASNER 2004A
PR D70 091101 Search for $\mathit CP$ Violation in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$