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Close-to-threshold meson production at COSY-11

机译:在COSY-11上接近阈值的介子生产

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摘要

Meson production at threshold in the hadron-hadron interaction began in the fifties when sufficient energies of accelerated protons were available. A strong interdependence between developments in accelerator physics, detector performance and theoretical understanding led to a unique vivid field of physics. With the advent of the new cooler rings the field entered a new domain of precision. The analysis of these new data permits a more fundamental consideration and a quantitative comparison of the production processes for different mesons in the few-body final states. The interpretation of the data takes advantage of the fact that production reactions close to threshold are characterized by only a few degrees of freedom between a well defined combination of initial and exit channels. Deviations from predictions of one-meson-exchange models are indications of new physics. In future, precision data on differential cross sections, isospin and spin observables will test theoretical models. [References: 36]
机译:在五十年代,当有足够的加速质子能量可用时,强子-强子相互作用的阈值介子生产就开始了。加速器物理学的发展,探测器性能和理论理解之间的强烈相互依存关系导致了物理学领域的独特生动。随着新的冷却器环的出现,该领域进入了一个新的精度领域。对这些新数据的分析允许进行更根本的考虑,并可以对少数体最终状态下不同介子的生产过程进行定量比较。数据的解释利用了这样一个事实,即接近阈值的生产反应的特征是在初始通道和出口通道的明确定义的组合之间只有几个自由度。与一介子交换模型预测的偏差表明了新的物理学。将来,关于微分截面,等旋和自旋观测物的精确数据将测试理论模型。 [参考:36]

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