$\mathit CP$ 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.

$\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$)

INSPIRE   PDGID:
S041CR1
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ -0.02 \pm0.08}$ OUR AVERAGE
$-0.03$ $\pm0.14$ $\pm0.01$ 1
LEES
2012S
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.18$ $\pm0.18$ $\pm0.01$
AUBERT
2009T
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$+0.04$ $\pm0.10$ $\pm0.02$
WEI
2009A
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.07$ $\pm0.22$ $\pm0.02$
AUBERT,B
2006J
 BABR Repl. by AUBERT 2009T
1  Measured in the union of 0.10 $<$ q${}^{2}<$ 8.12 GeV${}^{2}$/c${}^{4}$ and q${}^{2}$ $>$ 10.11 GeV${}^{2}$/c${}^{4}$. LEES 2012S reports also individual measurements $\mathit A_{CP}({{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ ) = $0.02$ $\pm0.18$ $\pm0.01$ for 0.10 $<$ q${}^{2}<$ 8.12 GeV${}^{2}$/c${}^{4}$ and $\mathit A_{CP}({{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ ) = $-0.06$ ${}^{+0.22}_{-0.21}$ $\pm0.01$ for q${}^{2}$ $>$ 10.11 GeV${}^{2}$/c${}^{4}$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References