$\mathit CP$ 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.

$\mathit A_{CP}$( ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{0}}$)

INSPIRE   PDGID:
S041AX0
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ -0.01 \pm0.04}$ OUR AVERAGE  Error includes scale factor of 1.1.
$-0.081$ $\pm0.054$ $\pm0.008$
ADACHI
2024
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.025$ $\pm0.043$ $\pm0.007$
DUH
2013
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.03$ $\pm0.08$ $\pm0.01$
AUBERT
2007BC
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.07$ $\pm0.06$ $\pm0.01$
LIN
2008
BELL Repl. by DUH 2013
$-0.01$ $\pm0.10$ $\pm0.02$ 1
AUBERT
2005L
 BABR Repl. by AUBERT 2007BC
$0.00$ $\pm0.10$ $\pm0.02$ 2
CHAO
2005A
 BELL Repl. by CHAO 2004B
$-0.02$ $\pm0.10$ $\pm0.01$ 3
CHAO
2004B
 BELL Repl. by LIN 2008
$-0.03$ ${}^{+0.18}_{-0.17}$ $\pm0.02$ 4
AUBERT
2003L
 BABR Repl. by AUBERT 2005L
$0.30$ $\pm0.30$ ${}^{+0.06}_{-0.04}$ 5
CASEY
2002
BELL Repl. by CHAO 2004B
1  Corresponds to a 90$\%$ CL interval of $-0.19$ $<$ $\mathit A_{CP}$ $<$ 0.21.
2  Corresponds to a 90$\%$ CL interval of $-0.17$ $<$ $\mathit A_{CP}$ $<$ 0.16.
3  This corresponds to 90$\%$ CL interval of $-0.18$ $<$ ${{\mathit A}_{{{CP}}}}$ $<$ 0.14.
4  Corresponds to 90$\%$ confidence range $-0.32<\mathit A_{\mathit CP}<0.27$.
5  Corresponds to 90$\%$ confidence range $-0.23<\mathit A_{\mathit CP}<+0.86$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References