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$\mathit CP$ VIOLATION PARAMETERS

$\mathit C_{{{\mathit \pi}^{0}} {{\mathit \pi}^{0}}}$( ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$)

VALUE

DOCUMENT ID

TECN

COMMENT

$\bf{ -0.30 \pm0.20}$

OUR AVERAGE

$-0.14$ $\pm0.46$ $\pm0.07$

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$-0.14$ $\pm0.36$ $\pm0.10$

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$-0.43$ $\pm0.26$ $\pm0.05$

BABR

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

• • We do not use the following data for averages, fits, limits, etc. • •

$-0.49$ $\pm0.35$ $\pm0.05$

BABR

Repl. by LEES 2013D

$-0.12$ $\pm0.56$ $\pm0.06$

BABR

Repl. by AUBERT 2007BC

$-0.44$ ${}^{+0.52}_{-0.53}$ $\pm0.17$

BELL

Repl. by JULIUS 2017

¹	Quotes $\mathit A_{{{\mathit \pi}^{0}} {{\mathit \pi}^{0}}}$ which is equal to $−\mathit C_{{{\mathit \pi}^{0}} {{\mathit \pi}^{0}}}$.

²	Corresponds to a 90$\%$ CL interval of $-0.88$ $<$ $\mathit A_{CP}$ $<$ 0.64.

Conservation Laws:

$\mathit CP$ INVARIANCE

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