${{\mathit D}^{0}}$ $\mathit CP$-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 ${{\mathit D}^{0}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$2 ${{\mathit \pi}^{0}}$ decays

INSPIRE   JSON  (beta) PDGID:
S032D51
VALUE EVTS DOCUMENT ID TECN  COMMENT
$0.790$ ${}^{+0.269}_{-0.255}$ 19
ABLIKIM
2022BG
 BES3 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ at 3.773 GeV
References