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

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

INSPIRE   PDGID:
S031A15
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.11 \pm0.17 }$ OUR AVERAGE
$0.03$ $\pm0.17$ $\pm0.14$ 1.0M 1
AAIJ
2014BD
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.08$ $\pm0.28$ $\pm0.14$ 277k
KO
2013
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$
$0.46$ $\pm0.36$ $\pm0.25$ 159k
LEES
2013E
 BABR ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$
1  AAIJ 2014BD reports its result as $\mathit A_{CP}$( ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{\pm}}$) with $\mathit CP$-violation effects in the ${{\mathit K}^{0}}−{{\overline{\mathit K}}^{0}}$ system subtracted. It also measures $\mathit A_{CP}$( ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}$ $/$ ${{\mathit K}^{0}}{{\mathit K}^{\pm}}$) + $\mathit A_{CP}$( ${{\mathit D}_{{{s}}}^{\pm}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}$ $/$ ${{\mathit K}^{0}}{{\mathit \pi}^{\pm}}$) = ($0.41$ $\pm0.49$ $\pm0.26)\%$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References