Effect of Pion Mean-Field on Properties of Pions and Kaons From Heavy-Ion Collisions

• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: —Heavy-ion PARTICLE production Medium ettect
• 年，卷（期）: 1996,（3）
• 页码范围: 125-132
• 页数: 8页
• 分类号: O4

摘要

【正】 The Relativistic Vlasov-Uehling-Uhlenbeck(RVUU)model is used to study the properties of pi-ons and kaons produced in heavy ion collisions.We include the nuclear medium effect on kaon and pionin the model,and simulate pion production and subthreshold kaon production in Kr+Zr reactions at 1GeV/u.The calculated results show that the attractive pion optical potential changes the final-state pionmomentum spectrum,enhancing the yield of pions with low transverse momenta.At the same ti1e it alsoincreases the kaon abundance and modifies the kaon momentum distribution.