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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >MEDIUM EFFECTS IN K+ NUCLEAR INTERACTIONS
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MEDIUM EFFECTS IN K+ NUCLEAR INTERACTIONS

机译：K +核相互作用的中等效应

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Total (sigma(T)) and reaction (sigma(R)) cross sections are derived self-consistently from the attenuation cross sections measured in transmission experiments at the AGS for K+ on Li-6, C, Si and Ca in the momentum range of 500-700 MeV/c by using a V-opt = t(eff)(rho)rho optical potential. Self-consistency requires, for the KN in-medium t matrix, that Im t(eff)(rho) increases linearly with the average nuclear density in excess of a threshold value of 0.088 +/- 0.004 fm(-3). The density dependence of Re t(eff)(rho) is studied phenomenologically, and also applying a relativistic mean field approach, by fitting to the sigma(T) and sigma(R) values. The real part of the optical potential is found to be systematically less repulsive with increasing energy than expected from the free-space repulsive KN interaction. When the elastic scattering data for Li-6 and C at 715 MeV/c are included in the analysis, a tendency of Re V-opt to generate an attractive pocket at the nuclear surface is observed. (C) 1997 Elsevier Science B.V. [References: 44]
机译：总横截面（sigma（T））和反应横截面（sigma（R））一致地从在AGS的透射实验中在动量范围内Li-6，C，Si和Ca上的K +的透射实验中测得的衰减截面中得出。通过使用V-opt = t（eff）（rho）rho光势可以得到500-700 MeV / c的光。对于KN中t矩阵，自洽性要求Im t（eff）（rho）随平均核密度超过阈值0.088 +/- 0.004 fm（-3）线性增加。 Re t（eff）（rho）的密度依赖性通过现象学研究，并通过相对论平均场方法拟合sigma（T）和sigma（R）值来进行研究。发现光势的实部在系统中随着能量的增加而具有比从自由空间排斥性KN相互作用所期望的更少的排斥性。当分析中包括Li-6和C在715 MeV / c的弹性散射数据时，可以观察到Re V-opt在核表面产生吸引腔的趋势。 （C）1997 Elsevier Science B.V. [参考：44]

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