Physics of Atomic Nuclei ( IF 0.3 ) Pub Date : 2022-04-16 , DOI: 10.1134/s1063778822020089 A. A. Turinge 1 , V. G. Nedorezov 1 , N. V. Rudnev 1
|
Abstract
The transparency of the carbon nucleus with respect to eta mesons of energy 25 to 95 MeV was measured. Mesons of this energy originated from the photoproduction on quasifree protons of the carbon nucleus (\(\gamma p\to\eta p\)) under the effect of photons with energies between 720 and 770 MeV. The inelastic cross sections for \(\eta N\) interaction in nuclear matter are determined from the measured transparency of the nucleus. The absence of nucleon resonances in the measured cross section—in particular, the \(S_{11}\) resonance, which is usually associated with the assumption of the existence of eta-meson nuclei—is discussed.
中文翻译：
Eta介子与核物质的相互作用
摘要
测量了碳核相对于能量为 25 至 95 MeV 的 eta 介子的透明度。这种能量的介子起源于在能量在 720 到 770 MeV 之间的光子的作用下，碳核的准自由质子 ( \(\gamma p\to\eta p\) ) 上的光生产。核物质中\(\eta N\)相互作用的非弹性截面由测量的原子核透明度确定。讨论了在测量的横截面中不存在核子共振 - 特别是\(S_{11}\)共振，它通常与存在 eta 介子核的假设相关联。
京公网安备 11010802027423号