${{\mathit \Sigma}^{0}}$ DECAY PARAMETERS

A${}^{{{\mathit \Sigma}}}_{CP}$ in ${{\mathit \Sigma}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \gamma}}$ and ${{\overline{\mathit \Sigma}}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}}{{\mathit \gamma}}$

INSPIRE   JSON  (beta) PDGID:
S021A02
A${}^{{{\mathit \Sigma}}}_{CP}$ = (${{\mathit \alpha}}$ + ${{\overline{\mathit \alpha}}})/({{\mathit \alpha}}−{{\overline{\mathit \alpha}}}$)
VALUE ($ 10^{-3} $) EVTS DOCUMENT ID TECN  COMMENT
$0.4$ $\pm2.9$ $\pm1.3$ 1.1M
ABLIKIM
2024CE
 BES3 ${{\mathit J / \psi}}$ $/$ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\overline{\mathit \Sigma}}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}{{\mathit \gamma}}{{\mathit \gamma}}$
References