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

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

INSPIRE   PDGID:
S034A21
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 0.4 \pm0.5 }$ OUR AVERAGE
$0.38$ $\pm0.46$ $\pm0.17$ 121k 1
AAIJ
2014BD
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.3$ $\pm2.0$ $\pm0.3$ 14k
LEES
2013E
 BABR ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.61$ $\pm0.83$ $\pm0.14$ 26k
AAIJ
2013W
 LHCB See AAIJ 2014BD
1  AAIJ 2014BD reports its result as $\mathit A_{CP}$( ${{\mathit D}_{{s}}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}$ ) 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:
AAIJ 2014BD
JHEP 1410 025 Search for $\mathit CP$ Violation in ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}$ and ${{\mathit D}_{{s}}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{\pm}}$ Decays
AAIJ 2013W
JHEP 1306 112 Search for $\mathit CP$ Violation in ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}$ and ${{\mathit D}_{{s}}^{+}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}$ Decays
LEES 2013E
PR D87 052012 Search for $\mathit CP$ Violation in the Decays ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}$ , ${{\mathit D}_{{s}}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}$ , and ${{\mathit D}_{{s}}^{\pm}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{\pm}}$