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Effect of Delta potential on the pi(-)/pi(+) ratio in heavy-ion collisions at intermediate energies

文献类型：期刊论文

作者Yong, Gao-Chan3,4; Zuo, Wei3,4; Guo, Wen-Mei1,2,4
刊名PHYSICAL REVIEW C
出版日期2015-11-30
卷号92页码:5
ISSN号0556-2813
DOI10.1103/PhysRevC.92.054619
英文摘要Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, effects of the Delta resonance potential on the free n/p and pi(-)/pi(+) ratios in the central collision of Au-197 + Au-197 at beam energies of 200 and 400 MeV/nucleon are studied. It is found that the effect of the Delta potential on the ratio of pre-equilibrium free n/p is invisible. The effect of Delta isovector potential on the kinetic-energy-integrating ratio of pi(-)/pi(+) may be observable only at lower incident beam energies and with stiffer symmetry energy. The strength of the Delta isoscalar potential affects the height of the pi(-)/pi(+) ratio around the Coulomb peak but does not affect the kinetic-energy-integrating ratio pi(-)/pi(+). In heavy-ion collisions at intermediate energies, relating to the question of nonconservation of energy on Delta or pi productions, one can replace the Delta potential by the nucleon isoscalar potential especially when a soft symmetry energy is employed.
WOS关键词HIGH-DENSITY BEHAVIOR ; NEUTRON-RICH NUCLEI ; SYMMETRY ENERGY ; MATTER ; STARS ; STATE ; MASS
资助项目National Natural Science Foundation of China[11375239] ; National Natural Science Foundation of China[11435014] ; National Natural Science Foundation of China[11175219] ; 973 Program of China[2013CB834405] ; Knowledge Innovation Project of the Chinese Academy of Sciences[KJCX2-EW-N01] ; SRF for ROCS, SEM ; National Key Basic Research Program of China[2013CB834400]
WOS研究方向Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000365867500004
资助机构National Natural Science Foundation of China ; 973 Program of China ; Knowledge Innovation Project of the Chinese Academy of Sciences ; SRF for ROCS, SEM ; National Key Basic Research Program of China
源URL[http://119.78.100.186/handle/113462/41221]  
专题近代物理研究所_理论物理研究室
通讯作者Yong, Gao-Chan
作者单位1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Yong, Gao-Chan,Zuo, Wei,Guo, Wen-Mei. Effect of Delta potential on the pi(-)/pi(+) ratio in heavy-ion collisions at intermediate energies[J]. PHYSICAL REVIEW C,2015,92:5.
APA Yong, Gao-Chan,Zuo, Wei,&Guo, Wen-Mei.(2015).Effect of Delta potential on the pi(-)/pi(+) ratio in heavy-ion collisions at intermediate energies.PHYSICAL REVIEW C,92,5.
MLA Yong, Gao-Chan,et al."Effect of Delta potential on the pi(-)/pi(+) ratio in heavy-ion collisions at intermediate energies".PHYSICAL REVIEW C 92(2015):5.

入库方式： OAI收割

来源：近代物理研究所

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