$\mathit CP$ VIOLATION

$\mathit A_{CP}$ is defined as
${B( {{\mathit B}^{-}} \rightarrow {{\overline{\mathit f}}} )–B( {{\mathit B}^{+}} \rightarrow {{\mathit f}} )\over B( {{\mathit B}^{-}} \rightarrow {{\overline{\mathit f}}} )+B( {{\mathit B}^{+}} \rightarrow {{\mathit f}} )}$,
the $\mathit CP$-violation charge asymmetry of exclusive ${{\mathit B}^{-}}$ and ${{\mathit B}^{+}}$ decay.

$\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}^{+}}$ )

INSPIRE   PDGID:
S041AX5
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.004 \pm0.011}$ OUR AVERAGE
$-0.002$ $\pm0.012$ $\pm0.006$ 1
AAIJ
2015O
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.008$ ${}^{+0.017}_{-0.018}$ $\pm0.009$
AUBERT
2009AV
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.028$ $\pm0.028$ $\pm0.021$
SCHUEMANN
2006
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.03$ $\pm0.12$ 2
CHEN
2000
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.010$ $\pm0.022$ $\pm0.006$
AUBERT
2007AE
 BABR Repl. by AUBERT 2009AV
$0.033$ $\pm0.028$ $\pm0.005$ 3
AUBERT
2005M
 BABR Repl. by AUBERT 2007AE
$0.037$ $\pm0.045$ $\pm0.011$ 4
AUBERT
2003W
 BABR Repl. by AUBERT 2005M
$-0.11$ $\pm0.11$ $\pm0.02$ 5
AUBERT
2002E
 BABR Repl. by AUBERT 2005M
$-0.015$ $\pm0.070$ $\pm0.009$ 6
CHEN
2002B
 BELL Repl. by SCHUEMANN 2006
$0.06$ $\pm0.15$ $\pm0.01$ 7
ABE
2001M
 BELL Repl. by CHEN 2002B
1  Obtained using $\mathit A_{CP}$( ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ ) = $0.003$ $\pm0.006$.
2  Corresponds to 90$\%$ confidence range $-0.17<\mathit A_{\mathit CP}<0.23$.
3  Corresponds to 90$\%$ confidence range $-0.012<\mathit A_{CP}<$0.078.
4  Corresponds to 90$\%$ confidence range $-0.04<\mathit A_{\mathit CP}<0.11$.
5  Corresponds to 90$\%$ confidence range $-0.28<\mathit A_{\mathit CP}<0.07$.
6  Corresponds to 90$\%$ confidence range $-0.13<\mathit A_{\mathit CP}<0.10$.
7  Corresponds to 90$\%$ confidence range $-0.20<\mathit A_{\mathit CP}<0.32$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2015O
PRL 115 051801 Observation of the ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \eta}^{\,'}}$ Decay
AUBERT 2009AV
PR D80 112002 ${{\mathit B}}$ Meson Decays to Charmless Meson Pairs Containing ${{\mathit \eta}}$ or ${{\mathit \eta}^{\,'}}$ Mesons
AUBERT 2007AE
PR D76 031103 Branching Fraction and $\mathit CP$-Violation Charge Asymmetry Measurements for ${{\mathit B}}$-Meson Decays to ${{\mathit \eta}}{{\mathit K}^{\pm}}$ , ${{\mathit \eta}}{{\mathit \pi}^{\pm}}$ , ${{\mathit \eta}^{\,'}}{{\mathit K}}$ , ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{\pm}}$ , ${{\mathit \omega}}{{\mathit K}}$ , and ${{\mathit \omega}}{{\mathit \pi}^{\pm}}$
SCHUEMANN 2006
PRL 97 061802 Evidence for ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}}$ and Improved Measurements for ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}}$
AUBERT 2005M
PRL 94 191802 Measurement of Branching Fractions and Time-Dependent $\mathit CP$-Violating Asymmetries in ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}}$ Decays
AUBERT 2003W
PRL 91 161801 Measurements of $\mathit CP$ Violating Asymmetries and Branching Fractions in ${{\mathit B}}$ Meson Decays to ${{\mathit K}}$
AUBERT 2002E
PR D65 051101 Direct $\mathit CP$ Violation Searches in Charmless Hadronic ${{\mathit B}}$ Meson Decays
CHEN 2002B
PL B546 196 Measurement of $\mathit CP$ Violation Parameters in ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}$ Decays
ABE 2001M
PL B517 309 Measurement of the Branching Fraction for ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}}$ and Search for ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}$
CHEN 2000
PRL 85 525 Measurement of Charge Asymmetries in Charmless Hadronic in ${{\mathit B}}$ Meson Decays