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arXiv 1003.4504hep-phhep-exnucl-exnucl-th
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从K+K终态相互作用研究近阈pp--> ppK +K-反应

Study of the near threshold pp-->ppK+K- reaction in view of the K+K final state interaction

M. Silarski, P. Moskal

摘要:

利用COSY-11实验在COSY冷同步加速器上对pp->ppK+K-反应的动力学阈值附近进行了测量,发现忽略K介子的相互作用,得到的激发函数与理论预期值之间存在显著差异。为了加深我们对ppKK系统低能动力学的了解,我们研究了pp-->ppK+K-反应的事件总数与两个粒子子系统不变质量的函数关系。基于低能K+K不变质量分布和广义Dalitz图分析,我们首次估计了K+K相互作用的散射长度。

英文摘要:

Measurements of the pp-->ppK+K- reaction, performed near the kinematical threshold with the experiment COSY-11 at the Cooler Synchrotron COSY, reveal a significant discrepancy between obtained excitation function and theoretical expectations neglecting interactions of kaons. In order to deepen our knowledge about the low energy dynamics of the ppKK system we investigated population of events for the pp-->ppK+K- reaction as a function of the invariant masses of two particle subsystems. Based for the first time on the low-energy K+K- invariant mass distributions and the generalized Dalitz plot analysis, we estimated the scattering length for the K+K- interaction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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