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

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

INSPIRE   PDGID:
S031A6
VALUE (%) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.01 \pm0.07 }$ OUR AVERAGE
$-0.004$ $\pm0.061$ $\pm0.045$ 6M
AAIJ
2019T
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$-1.8$ $\pm2.7$ $\pm1.6$ 780
ABLIKIM
2019M
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 3773 MeV
$-0.25$ $\pm0.28$ $\pm0.14$ 277k
KO
2013
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(nS)}}$
$0.13$ $\pm0.36$ $\pm0.25$ 159k
LEES
2013E
 BABR ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at ${{\mathit \Upsilon}{(4S)}}$
$-0.2$ $\pm1.5$ $\pm0.9$ 5.2k
MENDEZ
2010
CLEO ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 3774 MeV
$7.1$ $\pm6.1$ $\pm1.2$ 949 1
LINK
2002B
 FOCS ${{\mathit \gamma}}$ nucleus, ${{\overline{\mathit E}}}_{\gamma }\approx{}$180 GeV
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.16$ $\pm0.58$ $\pm0.25$
KO
2010
BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $\approx{}{{\mathit \Upsilon}{(4S)}}$
$6.9$ $\pm6.0$ $\pm1.5$ 949 2
LINK
2002B
 FOCS ${{\mathit \gamma}}$ nucleus, ${{\overline{\mathit E}}}_{\gamma }\approx{}$180 GeV
1  LINK 2002B measures $\mathit N$( ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}})/\mathit N$( ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{+}}$), the ratio of numbers of events observed, and similarly for the ${{\mathit D}^{-}}$.
2  LINK 2002B measures $\mathit N$( ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}})/\mathit N$( ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$), the ratio of numbers of events observed, and similarly for the ${{\mathit D}^{-}}$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References