Preequilibrium particle emissions and in-medium effects on the pion production in heavy-ion collisions

doi:10.1140/epja/i2017-12217-6

	Preequilibrium particle emissions and in-medium effects on the pion production in heavy-ion collisions
	Feng, Zhao-Qing
刊名	EUROPEAN PHYSICAL JOURNAL A
	2017-02-20
卷号	53 页码:8
ISSN号	1434-6001
DOI	10.1140/epja/i2017-12217-6
英文摘要	Within the framework of the Lanzhou quantum molecular dynamics (LQMD) transport model, pion dynamics in heavy-ion collisions near threshold energies and the emission of preequilibrium particles (nucleons and light complex fragments) have been investigated. A density, momentum and isospin-dependent pion-nucleon potential based on the Delta-hole model is implemented in the transport approach, which slightly leads to the increase of the pi(-)/pi(+) ratio, but reduces the total pion yields. It is found that a bump structure of the pi(-)/pi(+) ratio in the kinetic energy spectra appears at the pion energy close to the Delta(1232) resonance region. The yield ratios of neutrons to protons from the squeeze-out particles perpendicular to the reaction plane are sensitive to the stiffness of nuclear symmetry energy, in particular at the high-momentum (kinetic energy) tails.
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[11675226] ; National Natural Science Foundation of China[11175218] ; National Natural Science Foundation of China[U1332207]
WOS关键词	NUCLEAR SYMMETRY ENERGY ; DYNAMICS ; NEUTRON ; PROTON ; MATTER ; PROBE ; BOSON ; MODEL
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000404273600001
资助机构	Major State Basic Research Development Program in China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45052]
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	Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Feng, Zhao-Qing. Preequilibrium particle emissions and in-medium effects on the pion production in heavy-ion collisions[J]. EUROPEAN PHYSICAL JOURNAL A,2017,53:8.
APA	Feng, Zhao-Qing.(2017).Preequilibrium particle emissions and in-medium effects on the pion production in heavy-ion collisions.EUROPEAN PHYSICAL JOURNAL A,53,8.
MLA	Feng, Zhao-Qing."Preequilibrium particle emissions and in-medium effects on the pion production in heavy-ion collisions".EUROPEAN PHYSICAL JOURNAL A 53(2017):8.