标题： Kbar N → K Xi 反应的唯象模型 显示英文标题

标题： Phenomenological model for the Kbar N --> K Xi reaction

摘要： 一种用于Kbar N --> K Xi反应的表观模型被提出。 该模型包括通过Lambda、Sigma、Sigma(1385)和Lambda(1520)的s和u通道交换，以及通过上述阈值以上的超子共振的s通道交换。 给出了自旋为7/2的粒子的传播子的显式表达式。 高质量与高自旋共振在该过程中起着重要作用。 我们处理了从阈值到2.8 GeV范围内中心质心系中所有现有的截面和极化实验数据，并与实验结果达到了良好的一致。 对该模型在其他Xi产生基本反应以及Xi超核光谱学中的应用进行了简要讨论。 显示英文摘要

摘要： A phenomenological model for the Kbar N --> K Xi reaction is suggested. The model includes s and u channel exchanges by Lambda, Sigma, Sigma(1385), and Lambda(1520) and s channel exchanges by above-threshold hyperonic resonances. Explicit expression for the propagator for a particle with spin 7/2 is presented. High-mass and high-spin resonances play a significant role in the process. We deal with the whole set of existing experimental data on the cross sections and polarizations in the energy range from the threshold to 2.8 GeV in the center-of-mass system and reach a good agreement with experiments. Applications of the model to other elementary reactions of Xi production and to Xi hypernuclear spectroscopy are briefly discussed.