论文标题
$ j/ψ$和$ψ$和$ψ（2s）$衰减的电磁振幅降低到spin-1/2 baryon-antibaryon对
The electromagnetic amplitudes in the $J/ψ$ and $ψ(2S)$ decays into spin-1/2 baryon-antibaryon pairs
论文作者
论文摘要
在调查了一个charmonium $ψ= j/ψ的衰减之后，ψ（2s）$陷入了spin-1/2 baryon-antibaryon $ b \ bar {b} $对，并确定唯一给出中性状态的振幅的参数，在这项工作中，我们将注意力集中在衰老中，我们可以将衰老的衰老表现为baryned and AmpliTES，该参与者可以通过emplites empliTess进行参数，并以此为特征。 By considering the BESIII data on the $e^+e^- \to p \overline p$ cross section we obtain a full parametrization for the EM amplitudes and make predictions on the cross section of the decays $e^+ e^- \to Σ^+ \overline Σ^-$, $e^+ e^- \to Σ^- \overline Σ^+$ and $e^+ e^- \to ξ^ - \在$ j/ψ$和$ψ（2s）$ smoses处的ξ^+$。
After investigating the decays of a charmonium $ψ= J/ψ, ψ(2S)$ into a spin-1/2 baryon-antibaryon $B \bar{B}$ pair, with the determination of the only parameter that gives the EM amplitude for neutral final states, in this work we focus our attention on the decays into charged baryons, whose EM amplitudes can be expressed in terms of a further parameter. By considering the BESIII data on the $e^+e^- \to p \overline p$ cross section we obtain a full parametrization for the EM amplitudes and make predictions on the cross section of the decays $e^+ e^- \to Σ^+ \overline Σ^-$, $e^+ e^- \to Σ^- \overline Σ^+$ and $e^+ e^- \to Ξ^- \overline Ξ^+$ at the $J/ψ$ and $ψ(2S)$ masses.
