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arXiv 1711.03427nucl-exnucl-th
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K $^-$介子核俘获中$Σπ$对的形成

Formation of $Σπ$ pairs in nuclear captures of K$^-$ mesons

Raffaele Del Grande, Kristian Piscicchia, Slawomir Wycech

摘要:

K $^-$介子在束缚核子上的俘获为研究$\bar{\mathrm{K}}$ N系统运动学阈值以下的$Σπ$对提供了机会。目前,AMADEUS正在研究各种超子-π介子荷电组合。这些数据允许测试同位旋0和1的振幅,从而有可能检测共振$Λ$(1405)态的结构。对照类似的电产生数据,可以检测核介质中$Λ$(1405)的变化。计算了预期光谱及其不确定度。

英文摘要:

The capture of K$^-$ mesons on nucleons bound in nuclei offer a chance to study the $Σπ$ pairs below the kinematic threshold of the $\bar{\mathrm{K}}$N systems. Various hyperon-pion charged combination are presently under investigation by AMADEUS. These data allow to test both isospin 0 and 1 amplitudes giving the possibility to detect the structure of resonant $Λ$(1405) state. Contrasted against similar electro-production data, it is possible to detect changes of $Λ$(1405) in nuclear media. Expected spectra and their uncertainties are calculated.

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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