Unconventional Medium Effect in K⁺ Scattering From ⁶Li,¹²C,²⁸Si and ⁴⁰Ca

• 作者: C.H.Cai H.Shen P.Z.Ning S.Y.Yu Z.M.Xue
• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: UNCONVENTIONAL medium effect Ratio of total CROSS SECTIONS of K~+-nucleus to K~+-d Differential CROSS SECTIONS of K~+ SCATTERING QUARK NJL model
• 年，卷（期）: 1995,（2）
• 页码范围: 95-101
• 页数: 7页
• 分类号: O4

摘要

【正】 The results of comprehensive microscopic optical model calculations are pres-ented for the K⁺ scattering from ⁶Li,¹²C,²⁸Si and ⁴⁰Ca at incident momenta 400-800MeV/c.The unconventional medium effect （i.e.the density-dependent correction forthe K⁺-nucleon scattering amplitude） is considered in two approaches.Both results arein agreement with recent experimental data.The influence of the correction on K⁺ scat-tering from different nuclei are discussed in detail and only a weak dependence of thein-medium nucleon“swelling”effects on the mass number of target nuclei is found ex-cept for very light loosely-bound nucleus.