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

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	In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions
	Feng, ZQ; Xie, WJ; Chen, PH; Chen, J; Jin, GM
刊名	PHYSICAL REVIEW C
	2015
卷号	92 期号:4 页码:44604
通讯作者	Feng, ZQ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
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.
学科主题	Physics
类目[WOS]	Physics, Nuclear
关键词[WOS]	SUBTHRESHOLD KAON PRODUCTION ; NUCLEAR-MATTER ; ANTIKAON PRODUCTION ; SYMMETRY ENERGY ; RESONANCE MODEL ; PION-PRODUCTION ; K+ PRODUCTION ; ETA-MESONS ; EQUATION ; STATE
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20829]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Feng, ZQ,Xie, WJ,Chen, PH,et al. In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions[J]. PHYSICAL REVIEW C,2015,92(4):44604.
APA	Feng, ZQ,Xie, WJ,Chen, PH,Chen, J,&Jin, GM.(2015).In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions.PHYSICAL REVIEW C,92(4),44604.
MLA	Feng, ZQ,et al."In-medium and isospin effects on particle production near threshold energies in heavy-ion collisions".PHYSICAL REVIEW C 92.4(2015):44604.