${{\mathit D}^{0}}$ $\mathit CP$-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}^{-}}$3 ${{\mathit \pi}^{0}}$ decays

INSPIRE   JSON  (beta) PDGID:
S032D49
VALUE EVTS DOCUMENT ID TECN  COMMENT
$0.520$ ${}^{+0.338}_{-0.269}$ $12$ ${}^{+4.9}_{-3.9}$
ABLIKIM
2022BG
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 3.773 GeV
References