$\mathit CP$ VIOLATION

$\mathit A_{CP}$ is defined as
${B( {{\overline{\mathit B}}} \rightarrow {{\overline{\mathit f}}} )–B( {{\mathit B}} \rightarrow {{\mathit f}} )\over B( {{\overline{\mathit B}}} \rightarrow {{\overline{\mathit f}}} )+B( {{\mathit B}} \rightarrow {{\mathit f}} )}$,
the $\mathit CP$-violation charge asymmetry of inclusive ${{\mathit B}^{\pm}}$ and ${{\mathit B}^{0}}$ decay.

$\mathit A_{CP}$( ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}}$ anything)

INSPIRE   PDGID:
S049CP8
VALUE DOCUMENT ID TECN  COMMENT
$-0.13$ $\pm0.04$ ${}^{+0.02}_{-0.03}$ 1
NISHIMURA
2010
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
1  Uses ${{\mathit B}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit X}_{{s}}}$ with 0.4 $<$ ${\mathit m}_{{{\mathit X}_{{s}}}}<$ 2.6 GeV/c${}^{2}$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
NISHIMURA 2010
PRL 105 191803 First Measurement of Inclusive ${{\mathit B}}$ $\rightarrow$ ${{\mathit X}_{{s}}}{{\mathit \eta}}$ Decays