$\mathit CP$ 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.

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

INSPIRE   PDGID:
S041AX1
VALUE ($ 10^{-3} $) DOCUMENT ID TECN  COMMENT
$\bf{ 1.8 \pm3.0}$ OUR AVERAGE  Error includes scale factor of 1.5.  See the ideogram below.
$0.9$ $\pm2.7$ $\pm0.7$
AAIJ
2017AP
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$5.9$ $\pm3.6$ $\pm0.7$
ABAZOV
2013M
 D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$-7.6$ $\pm5.0$ $\pm2.2$
SAKAI
2010
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$90$ $\pm70$ $\pm20$ 1
WEI
2008
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$30$ $\pm14$ $\pm10$ 2
AUBERT
2005J
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$18$ $\pm43$ $\pm4$ 3
BONVICINI
2000
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$7.5$ $\pm6.1$ $\pm3.0$ 4
ABAZOV
2008O
 D0 Repl. by ABAZOV 2013M
$30$ $\pm15$ $\pm6$
AUBERT
2004P
 BABR Repl. by AUBERT 2005J
$-26$ $\pm22$ $\pm17$
ABE
2003B
 BELL Repl. by SAKAI 2010
$3$ $\pm30$ $\pm4$
AUBERT
2002F
 BABR Repl. by AUBERT 2004P
1  Uses ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}$ , where ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}$ .
2  The result reported corresponds to $−\mathit A_{CP}$.
3  A $+0.3\%$ correction is applied due to a slightly higher reconstruction efficiency for the positive kaons.
4  Uses ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ decay.

           $\mathit A_{CP}({{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit K}^{+}}$ ) ($ 10^{-3} $)
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2017AP
PR D95 052005 Measurement of the ${{\mathit B}^{\pm}}$ Production Asymmetry and the $\mathit CP$ Asymmetry in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ Decays
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
SAKAI 2010
PR D82 091104 Search for $\mathit CP$-Violating Charge Asymmetry in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ 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
WEI 2008
PL B659 80 Study of the Decay Mechanism for ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit K}^{+}}$ and ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}}{{\mathit \pi}^{+}}$
AUBERT 2005J
PRL 94 141801 Measurement of Branching Fractions and Charge Asymmetries for Exclusive ${{\mathit B}}$ Decays to Charmonium
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
BONVICINI 2000
PRL 84 5940 Search for $\mathit CP$ Violation in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{\pm}}$ and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}^{\pm}}$ Decays