$\mathit CP$ VIOLATION PARAMETERS

$\mathit C_{{{\mathit \eta}^{\,'}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}^{0}}$)

INSPIRE   JSON  (beta) PDGID:
S042CEK
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ -0.08 \pm0.04}$ OUR AVERAGE  Error includes scale factor of 1.1.
$-0.19$ $\pm0.08$ $\pm0.03$ 1
ADACHI
2024P
 BEL2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.03$ $\pm0.05$ $\pm0.04$ 2
SANTELJ
2014
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.08$ $\pm0.06$ $\pm0.02$
AUBERT
2009I
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.16$ $\pm0.07$ $\pm0.03$ 3
AUBERT
2007A
 BABR Repl. by AUBERT 2009I
$0.01$ $\pm0.07$ $\pm0.05$ 3, 2
CHEN
2007
BELL Repl. by SANTELJ 2014
1  Asymmetries are measured using ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit K}_S^0}$ decays, with ${{\mathit \eta}^{\,'}}$ $\rightarrow$ ${{\mathit \eta}}$ ( $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ ) ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and ${{\mathit \eta}^{\,'}}$ $\rightarrow$ ${{\mathit \rho}}$ ( $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ) ${{\mathit \gamma}}$.
2  The paper reports $\mathit A$, which is equal to $−\mathit C$.
3  The mixing-induced $\mathit CP$ violation is reported with a significance of more than 5 standard deviations in this ${{\mathit b}}$ $\rightarrow$ ${{\mathit s}}$ penguin dominated mode.
Conservation Laws:
$\mathit CP$ INVARIANCE
References