$\mathit CP$ 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.

$\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}$ )

INSPIRE   PDGID:
S041AX9
VALUE ($ 10^{-2} $) DOCUMENT ID TECN  COMMENT
$\bf{ 1.8 \pm1.2}$ OUR AVERAGE  Error includes scale factor of 1.3.
$1.91$ $\pm0.89$ $\pm0.16$ 1
AAIJ
2017O
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$-4.2$ $\pm4.4$ $\pm0.9$
ABAZOV
2013M
 D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$12.3$ $\pm8.5$ $\pm0.4$
AUBERT
2004P
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-2.3$ $\pm16.4$ $\pm1.5$
ABE
2003B
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.5$ $\pm2.7$ $\pm1.1$ 2
AAIJ
2012AC
 LHCB Repl. by AAIJ 2017O
$-9$ $\pm8$ $\pm3$ 3
ABAZOV
2008O
 D0 Repl. by ABAZOV 2013M
$1$ $\pm22$ $\pm1$
AUBERT
2002F
 BABR Repl. by AUBERT 2004P
1  Obtained by using LHCb measurement of $\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$ ) = $0.0009$ $\pm0.0027$ $\pm0.0007$ of AAIJ 2017AP.
2  Uses $\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$ ) = $0.001$ $\pm0.007$ to extract production asymmetry.
3  Uses ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ decay.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2017O
JHEP 1703 036 Measurement of the Ratio of Branching Fractions and Difference in $\mathit CP$ Asymmetries of the Decays ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}$ and ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$
ABAZOV 2013M
PRL 110 241801 Measurement of Direct $\mathit CP$ Violation Parameters in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{\pm}}$ Decays with 10.4 ${\mathrm {fb}}{}^{-1}$ of Tevatron Data
AAIJ 2012AC
PR D85 091105 Measurements of the Branching Fractions and $\mathit CP$ Asymmetries of ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{\pm}}$ and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{\pm}}$ Decays
ABAZOV 2008O
PRL 100 211802 Study of Direct $\mathit CP$ Violation in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$( ${{\mathit \pi}^{\pm}}$) File Decays
AUBERT 2004P
PRL 92 241802 Study of ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{\pm}}$ and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ Decays: Measurement of the Ratio of Branching Fractions and Search for Direct $\mathit CP$ Violation
ABE 2003B
PR D67 032003 Measurement of Branching Fractions and Charge Asymmetries for Two-Body ${{\mathit B}}$ Meson Decays with Charmonium
AUBERT 2002F
PR D65 091101 Study of ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{\pm}}$ and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ Decays: Measurement of the Ratio of Branching Fractions and Search for Direct $\mathit CP$ Violating Charge Asymmetries