${{\mathit D}_{{{s}}}^{+}}−{{\mathit D}_{{{s}}}^{-}}$ $\mathit CP$-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 $( ${{\mathit D}_{{{s}}}^{-}}$ $\rightarrow$ ${{\overline{\mathit f}}}$)].

$\mathit A_{CP}({{\mathit \pi}^{\pm}}{{\mathit \eta}}$) in ${{\mathit D}_{{{s}}}^{\pm}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \eta}}$

INSPIRE   PDGID:
S034A10
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.32 \pm0.31 }$ OUR AVERAGE
$0.32$ $\pm0.51$ $\pm0.12$ ~136k
AAIJ
2023E
 LHCB 6 fb${}^{-1}$, ${{\mathit p}}{{\mathit p}}$ at 13 TeV, ${{\mathit \eta}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}}{{\mathit \pi}}$
$0.8$ $\pm0.7$ $\pm0.5$ 38k
AAIJ
2021U
 LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$0.2$ $\pm0.3$ $\pm0.3$ 22k
GUAN
2021
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4,5S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$1.1$ $\pm3.0$ $\pm0.8$
ONYISI
2013
CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 4.17 GeV
$-4.6$ $\pm2.9$ $\pm0.3$ 2.5k
MENDEZ
2010
CLEO See ONYISI 2013
$-8.2$ $\pm5.2$ $\pm0.8$
ALEXANDER
2008
CLEO See MENDEZ 2010
Conservation Laws:
$\mathit CP$ INVARIANCE
References