标题： 正反电子湮灭中快速度空隙的首次研究 显示英文标题

标题： First Study of Rapidity Gaps in e+e- Annihilation

摘要： 我们展示了首次关于正负电子湮灭中快速性间隙的研究，该研究使用SLAC的SLD实验收集的Z0衰变数据。 我们测量到的快速性间隙谱随着间隙大小的增加呈指数下降，跨越了五个数量级，并且未观察到包含大间隙的异常事件类别。 这支持了用色单态对象交换来解释在pp和ep碰撞中测得的大间隙事件的解读。 重味或额外喷注的存在不影响这些结论。 显示英文摘要

摘要： We present the first study of rapidity gaps in e+e- annihilations using Z0 decays collected by the SLD experiment at SLAC. Our measured rapidity gap spectra fall exponentially with increasing gap size over five decades, and we observe no anomalous class of events containing large gaps. This supports the interpretation of the large-gap events measured in pp and ep collisions in terms of exchange of color-singlet objects. The presence of heavy flavors or additional jets does not affect these conclusions.