In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions

doi:10.1103/PhysRevC.92.044604

	In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions
	Feng, Zhao-Qing1,2,3 ; Xie, Wen-Jie 1; Chen, Peng-Hui 1,4; Chen, Jie 1; Jin, Gen-Ming 1
刊名	PHYSICAL REVIEW C
	2015-10-12
卷号	92 页码:12
ISSN号	0556-2813
DOI	10.1103/PhysRevC.92.044604
英文摘要	Dynamics of pseudoscalar mesons (pi, eta, K, and (K) over bar) and hyperons (Lambda and Sigma) produced in heavy-ion collisions near threshold energies has been investigated within the Lanzhou quantum molecular dynamics transport model. The in-medium modifications on particle production in dense nuclear matter are implemented in the model through corrections on the elementary cross sections and by inclusion of the meson-nucleon (or hyperonnucleon) potentials, in which the isospin effects are considered. It is found that the transportation of particles are influenced with the in-medium corrections. The total number of pions is reduced with an isospin-, density-, and momentum-dependent pion-nucleon potential. However, the ratios of charged pions is enhanced with inclusion of the potential. The production of eta in the domain of midrapidities and high momenta is sensitive to the n-nucleon potential but weakly depends on symmetry energy. The attractive antikaon-nucleon potential enhances the subthreshold (K) over bar production and also influences the structure of phase-space distributions. The dynamics of etas, kaons, antikaons, and hyperons is also influenced by the pion potential because of collisions between pions and nucleons (resonances). The impacts of mean-field potentials on particle dynamics are investigated, such as the phase-space distributions from rapidity and transverse momentum spectra, inclusive invariant spectra, collective flows, etc.
资助项目	Major State Basic Research Development Program in China[2014CB845405] ; Major State Basic Research Development Program in China[2015CB856903] ; National Natural Science Foundation of China[11175218] ; National Natural Science Foundation of China[U1332207] ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Yuncheng University[YQ2014014]
WOS关键词	SUBTHRESHOLD KAON PRODUCTION ; NUCLEAR-MATTER ; ANTIKAON PRODUCTION ; SYMMETRY ENERGY ; RESONANCE MODEL ; PION-PRODUCTION ; K+ PRODUCTION ; ETA-MESONS ; EQUATION ; STATE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000362897900004
资助机构	Major State Basic Research Development Program in China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Yuncheng University
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40831]
专题	中国科学院近代物理研究所
通讯作者	Feng, Zhao-Qing
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China 4.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Feng, Zhao-Qing,Xie, Wen-Jie,Chen, Peng-Hui,et al. In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions[J]. PHYSICAL REVIEW C,2015,92:12.
APA	Feng, Zhao-Qing,Xie, Wen-Jie,Chen, Peng-Hui,Chen, Jie,&Jin, Gen-Ming.(2015).In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions.PHYSICAL REVIEW C,92,12.
MLA	Feng, Zhao-Qing,et al."In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions".PHYSICAL REVIEW C 92(2015):12.