标题： 重夸克onium高激发态的轻子宽度 显示英文标题

标题： Leptonic widths of high excitations in heavy quarkonia

摘要： 与测量的$\psi(4040)$、$\psi(4415)$和$\Upsilon (11019)$共振态的电子宽度达成一致，如果考虑到两个效应：在远距离处约束势的平坦化以及在$r\ga 1.2$飞米处胶子交换相互作用的完全屏蔽。 未观测到的$\Upsilon(7S)$和$\psi(5S)$共振的轻子宽度：$\Gamma_{e^+e^-}(\Upsilon (7S))=0.11$keV 和$\Gamma(\psi(5S))\approx 0.54$keV 被预测。 显示英文摘要

摘要： Agreement with the measured electronic widths of the $\psi(4040)$, $\psi(4415)$, and $\Upsilon (11019)$ resonances is shown to be reached if two effects are taken into account: a flattening of the confining potential at large distances and a total screening of the gluon-exchange interaction at $r\ga 1.2$ fm. The leptonic widths of the unobserved $\Upsilon(7S)$ and $\psi(5S)$ resonances: $\Gamma_{e^+e^-}(\Upsilon (7S))=0.11$ keV and $\Gamma(\psi(5S))\approx 0.54$ keV are predicted.