PROBING THE SYMMETRY ENERGY AT SUPRA-SATURATION DENSITIES FROM PION EMISSION IN HEAVY-ION COLLISIONS

doi:10.1142/S0218301310016107

	PROBING THE SYMMETRY ENERGY AT SUPRA-SATURATION DENSITIES FROM PION EMISSION IN HEAVY-ION COLLISIONS
	Feng, Zhao-Qing; Jin, Gen-Ming
	2010-09
关键词	ImIQMD model pion emission Skyrme parameters symmetry energy
卷号	19
期号	8-9
DOI	10.1142/S0218301310016107
页码	1686-1693
英文摘要	Within the framework of the improved isospin dependent quantum molecular dynamics (ImIQMD) model, the emission of pion in heavy-ion collisions in the region 1 A GeV as a probe of nuclear symmetry energy at supra-saturation densities is investigated systematically, in which the pion is considered to be mainly produced by the decay of resonances Delta(1232) and N*(1440). The pi(-)/pi(+) yields are calculated for selected Skyrme parameters SkP, SLy6, Ska and SIII, and also for the cases of different stiffness of symmetry energy with the parameter SLy6. Preliminary results compared with the measured data by the FOPI collaboration favor a hard symmetry energy of the potential term proportional to (rho/rho(0))(gamma s) with gamma(s) = 2.
会议录	INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
会议录出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
会议录出版地	5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
语种	英语
WOS研究方向	Physics
WOS记录号	WOS:000282021700021
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/57921]
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,Jin, Gen-Ming. PROBING THE SYMMETRY ENERGY AT SUPRA-SATURATION DENSITIES FROM PION EMISSION IN HEAVY-ION COLLISIONS[C]. 见:.