${{\mathit D}^{0}}$ $\mathit CP$-EVEN FRACTIONS

The $\mathit CP$-even fraction F$_{+}$, defined for self-conjugate final states, like the coherence factor is useful for measuring the unitary triangle angle $\gamma $ in ${{\mathit B}}$ $\rightarrow$ ${{\mathit D}}{{\mathit K}}$ decays. A purely $\mathit CP$-even state has F$_{+}$ = 1, a $\mathit CP$-odd one has F$_{+}$ = 0. For details, see NAYAK 2015 .

$\mathit CP$-even fraction in ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ decays

INSPIRE   PDGID:
S032EFP
VALUE (%) DOCUMENT ID  COMMENT
$97.3$ $\pm1.7$
MALDE
2015
Uses CLEO data
• • We do not use the following data for averages, fits, limits, etc. • •
$96.8$ $\pm1.7$ $\pm0.6$
NAYAK
2015
see MALDE 2015
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
MALDE 2015
PL B747 9 First Determination of the $\mathit CP$ Content of ${{\mathit D}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and Updated Determination of the $\mathit CP$ Contents of ${{\mathit D}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ and ${{\mathit D}}$ $\rightarrow$ ${{\mathit \pi}^{0}}$
NAYAK 2015
PL B740 1 First Determination of the $\mathit CP$ Content of ${{\mathit D}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ and ${{\mathit D}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$