A model to explain the angular distribution of J/ψJ/ψandψ(2S)ψ(2S)decay intoΛΛˉandΣ0Σ0ˉ

• 作 者: M.Alekseev A.Amoroso R.Baldini
• 机 构: Università,diTorino,INFNSezionediTorino,INFNLaboratoriNazionalidiFrascati,INFNSezionediFerrara,I
• 出 处: 中国物理C:英文版
• 发表日期: 2019年2期
• 关键词: J/ψandψ(2S)hadronic DECAYS effective Lagrangian MODEL polarization parameters

BESIII data show a particular angular distribution for the decay of J/ψJ/ψandψ(2S)ψ(2S)mesons intoΛΛˉˉˉˉΛΛˉandΣ0Σˉˉˉˉ0Σ0Σˉ0 hyperons:the angular distribution of the decayψ(2S)→Σ0Σˉˉˉˉ0ψ(2S)→Σ0Σˉ0 exhibits an opposite trend with respect to the other three