Roles of N?→NN and πN→? Reactions in Heavy-Ion Collisions at Intermediate Energies |
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引用本文: | 谢文杰,王丽君,苏军,张丰收.Roles of N?→NN and πN→? Reactions in Heavy-Ion Collisions at Intermediate Energies[J].理论物理通讯,2019,71(2):203-208. |
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作者姓名: | 谢文杰 王丽君 苏军 张丰收 |
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基金项目: | Supported by the National Natural Science Foundation of China under Grant No. 11505150; the Yuncheng University Research Project under Grant No. YQ-2014014; the National Natural Science Foundation of China under Grant No. 11405278 |
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摘 要: | Within the framework of the isospin-dependent transport model, the roles of the reactions N? → NN and πN→ ? are investigated through simulating heavy-ion collisions at 1000 MeV/nucleon. The absorption process N? → NN plays an important role for heavy impact systems and small impact parameters than for light impact systems and large impact parameters. The resorption process πN→ ? is of importance for heavy impact systems and large impact parameters than for light impact systems and small impact parameters. Thus the influences of the reaction N? → N N(πN→ ?) on pion production dynamics can be neglected in heavy-ion collisions for smaller(larger) impact parameters and light systems. It is the reaction πN→ ? that causes the anti-correlation of pions and nucleons in the rapidity dependence of the directed flow.
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收稿时间: | 2018-07-29 |
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