${{\mathit D}_{{{s}}}^{+}}−{{\mathit D}_{{{s}}}^{-}}$ $\mathit CP$-VIOLATING DECAY-RATE ASYMMETRIES

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

$\mathit A_{CP}({{\mathit K}^{\pm}}{{\mathit K}_S^0}$ ) in ${{\mathit D}_{{{s}}}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}_S^0}$

INSPIRE   PDGID:
S034A05
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ (90 \pm260) \times 10^{-3} }$ OUR AVERAGE
$0.6$ $\pm2.8$ $\pm0.6$ 1.8k
ABLIKIM
2019AM
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4178 MeV
$-0.05$ $\pm0.23$ $\pm0.24$ 288k 1
LEES
2013E
 BABR ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$
$2.6$ $\pm1.5$ $\pm0.6$
ONYISI
2013
CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.17 GeV
$0.12$ $\pm0.36$ $\pm0.22$
KO
2010
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$4.7$ $\pm1.8$ $\pm0.9$ 4.0k
MENDEZ
2010
CLEO See ONYISI 2013
$4.9$ $\pm2.1$ $\pm0.9$
ALEXANDER
2008
CLEO See MENDEZ 2010
1  LEES 2013E finds that after subtracting the contribution due to ${{\mathit K}^{0}}−{{\overline{\mathit K}}^{0}}$ mixing, the $\mathit CP$ asymmetry is ($+0.28$ $\pm0.23$ $\pm0.24)\%$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References