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$D^{\pm}$ $C P$ -VIOLATING DECAY-RATE ASYMMETRIES

This is the difference between

D^{+}

and

D^{-}

partial widths for the decay to state

f

, divided by the sum of the widths:

A_{C P} (f

)= [

Γ

(

D^{+}

\to

f

)

-

Γ

(

D^{-}

\to

\overset{―}{f})] / [Γ

(

D^{+}

\to

f

) +

Γ

(

D^{-}

\to

\overset{―}{f}

)].

$A_{C P} (K^{\mp}$ 2 $π^{\pm}$ ) in $D^{+}$ $\to$ $K^{-}$ 2 $π^{+}$ , $D^{-}$ $\to$ $K^{+}$ 2 $π^{-}$

VALUE (%)

EVTS

DOCUMENT ID

TECN

COMMENT

- 0.18 \pm 0.16

OUR AVERAGE

- 0.16

\pm 0.15

\pm 0.09

2.3M

D0

p \overset{―}{p}

,

\sqrt{s}

= 1.96 TeV

- 0.3

\pm 0.2

\pm 0.4

CLEO

All CLEO-c runs

• • We do not use the following data for averages, fits, limits, etc. • •

- 0.1

\pm 0.4

\pm 0.9

231k

CLEO

See BONVICINI 2014

- 0.5

\pm 0.4

\pm 0.9

CLEO

See MENDEZ 2010

Conservation Laws:

C P

PR D90 111102

Measurement of the Direct

C P

-Violating Parameter

A_{C P}

in the Decay

D^{+}

\to

K^{-} π^{+} π^{+}

PR D89 072002

Updated Measurements of Absolute

D^{+}

and

D^{0}

Hadronic Branching Fractions and

σ (e^{+} e^{-} \to D \overset{―}{D})

at

E_{cm}

= 3774 MeV

PR D81 052013

Measurements of

D

Meson Decays to Two Pseudoscalar Mesons

PR D76 112001

Measurement of Absolute Hadronic Branching Fractions of

D

Mesons and

e^{+}

e^{-}

\to

D \overset{―}{D}

Cross Sections at the

ψ (3770)

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