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Zucchelli S
University of Florida, Gainesville, Florida 32611, USA.
Phys Rev Lett. 2004 Oct 1;93(14):141601. doi: 10.1103/PhysRevLett.93.141601. Epub 2004 Sep 28.
We report results from a study of events with a double-Pomeron exchange topology produced in p p collisions at sqrt[s]=1800 GeV. The events are characterized by a leading antiproton and a large rapidity gap on the outgoing proton side. We find that the differential production cross section agrees in shape with predictions based on Regge theory and factorization, and that the ratio of double-Pomeron exchange to single diffractive production rates is relatively unsuppressed as compared to the O(10) suppression factor previously measured in single diffractive production.
我们报告了在(\sqrt{s}=1800)GeV的质子-质子碰撞中产生的具有双Pomeron交换拓扑结构事件的研究结果。这些事件的特征是一个领先的反质子以及在出射质子一侧有一个大的快度间隙。我们发现，微分产生截面的形状与基于Regge理论和因子化的预测相符，并且与先前在单衍射产生中测量的(O(10))抑制因子相比，双Pomeron交换与单衍射产生率的比值相对未被抑制。
