$\mathit CP$ 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.

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

INSPIRE   PDGID:
S041AX3
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.030 \pm0.013}$ OUR AVERAGE
$0.025$ $\pm0.015$ $\pm0.007$
AAIJ
2021H
 LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$0.043$ $\pm0.024$ $\pm0.002$
DUH
2013
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$0.030$ $\pm0.039$ $\pm0.010$
AUBERT
2007BC
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.29$ $\pm0.23$ 1
CHEN
2000
CLE2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.07$ $\pm0.03$ $\pm0.01$
LIN
2008
BELL Repl. by DUH 2013
$0.06$ $\pm0.06$ $\pm0.01$ 2
AUBERT
2005L
 BABR Repl. by AUBERT 2007BC
$0.06$ $\pm0.06$ $\pm0.02$ 2
CHAO
2005A
 BELL Repl. by CHAO 2004B
$0.04$ $\pm0.05$ $\pm0.02$ 3
CHAO
2004B
 BELL Repl. by LIN 2008
$-0.09$ $\pm0.09$ $\pm0.01$ 4
AUBERT
2003L
 BABR Repl. by AUBERT 2005L
$-0.02$ $\pm0.19$ $\pm0.02$ 5
CASEY
2002
BELL Repl. by CHAO 2004B
$-0.059$ ${}^{+0.222}_{-0.196}$ ${}^{+0.055}_{-0.017}$ 6
ABE
2001K
 BELL Repl. by CASEY 2002
$0.00$ $\pm0.18$ $\pm0.04$ 7
AUBERT
2001E
 BABR Repl. by AUBERT 2003L
1  Corresponds to 90$\%$ confidence range $-0.67<\mathit A_{\mathit CP}<0.09$.
2  Corresponds to a 90$\%$ CL interval of $-0.06$ $<$ $\mathit A_{CP}$ $<$ 0.18.
3  Corresponds to 90$\%$ CL interval of $-0.05$ $<$ ${{\mathit A}_{{CP}}}$ $<$ 0.13.
4  Corresponds to 90$\%$ confidence range $-0.24<\mathit A_{\mathit CP}<0.06$.
5  Corresponds to 90$\%$ confidence range $-0.35<\mathit A_{\mathit CP}<+0.30$.
6  Corresponds to 90$\%$ confidence range $-0.40<\mathit A_{\mathit CP}<0.36$.
7  Corresponds to 90$\%$ confidence range $-0.30<\mathit A_{\mathit CP}<+0.30$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2021H
PRL 126 091802 Measurement of CP Violation in the Decay $B^{+} \rightarrow K^{+} \pi^{0}$
DUH 2013
PR D87 031103 Measurements of Branching Fractions and Direct $\mathit CP$ Asymmetries for ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit \pi}}$ , ${{\mathit B}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ and ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit K}}$ Decays
LIN 2008
NAT 452 332 Difference in Direct Charge-Parity Violation between Charged and Neutral $\mathit B$ Meson Decays
AUBERT 2007BC
PR D76 091102 Study of ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{0}}$ , and ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{0}}$ decays, and Isospin Analysis of ${{\mathit B}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ Decays
AUBERT 2005L
PRL 94 181802 Branching Fractions and $\mathit CP$ Asymmetries in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{0}}$ and ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \pi}^{0}}$ Decays and Isospin Analysis of the ${{\mathit B}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ System
CHAO 2005A
PR D71 031502 Improved Measurements of the Partial Rate Asymmetry in ${{\mathit B}}$ $\rightarrow$ ${{\mathit h}}{{\mathit h}}$ Decays
CHAO 2004B
PRL 93 191802 Evidence for Direct $\mathit CP$ Violation in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ Decays
AUBERT 2003L
PRL 91 021801 Observation of the Decay ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{0}}$ , Study of ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{0}}$ , and Search for ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
CASEY 2002
PR D66 092002 Charmless Hadronic Two-Body ${{\mathit B}}$ Meson Decays
ABE 2001K
PR D64 071101 Search for Direct $\mathit CP$ Violation in ${{\mathit B}}$ $\rightarrow$ ${{\mathit K}}{{\mathit \pi}}$ Decays
AUBERT 2001E
PRL 87 151802 Measurement of Branching Fractions and Search for $\mathit CP$ Violating Charge Asymmetries in Charmless Two Body ${{\mathit B}}$ Decays in to Pions and Kaons
CHEN 2000
PRL 85 525 Measurement of Charge Asymmetries in Charmless Hadronic in ${{\mathit B}}$ Meson Decays