$\mathit CP$ 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.

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

INSPIRE   PDGID:
S041CQ1
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.06 \pm0.16}$ OUR AVERAGE
$0.03$ $\pm0.17$ $\pm0.02$
AUBERT
2009AV
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.20$ ${}^{+0.37}_{-0.36}$ $\pm0.04$
SCHUEMANN
2006
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.21$ $\pm0.17$ $\pm0.01$
AUBERT
2007AE
 BABR Repl. by AUBERT 2009AV
$0.14$ $\pm0.16$ $\pm0.01$
AUBERT,B
2005K
 BABR Repl. by AUBERT 2007AE
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
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,B 2005K
PRL 95 131803 Measurement of Branching Fractions and Charge Asymmetries in ${{\mathit B}^{+}}$ Decays to ${{\mathit \eta}}{{\mathit \pi}^{+}}$ , ${{\mathit \eta}}{{\mathit K}^{+}}$ , ${{\mathit \eta}}{{\mathit \rho}^{+}}$ , and ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}$ , and Search for ${{\mathit B}^{0}}$ Decays to ${{\mathit \eta}}{{\mathit K}^{0}}$ and ${{\mathit \eta}}{{\mathit \omega}}$