Density and temperature dependence of nucleon-nucleon elastic cross section

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	Density and temperature dependence of nucleon-nucleon elastic cross section
	Li, QF; Li, ZX; Zhao, EG; Li, QF , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
刊名	PHYSICAL REVIEW C
	2004
卷号	69 期号:1 页码:-
关键词	Relativistic Mean-field Microscopic Calculation Fragmentation Isotopes Isospin Matter Scalar Meson
ISSN号	0556-2813
英文摘要	The in-medium neutron-proton, proton-proton (neutron-neutron) elastic scattering cross sections (sigma(np),sigma(pp(nn))) are studied based on the effective Lagrangian of density dependent relativistic hadron theory in which the delta[a(0)(980)] meson is included. Our study shows that at low densities the sigma(np)* is about three to four times larger than sigma(pp(nn))* and at densities higher than the normal density the isospin effect is almost washed out. Because of coupling to delta meson the sigma(nn)* and sigma(pp)* are different in isospin asymmetric medium following the splitting of the proton and neutron masses. The isospin effect on the density dependence of the in-medium nucleon elastic cross section is dominantly contributed by the isovector delta and rho mesons. The temperature effect on the sigma(np)* and sigma(pp(nn))* is studied. It is shown that the temperature effect is weaker compared with the density effect but it becomes obvious as density increases.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000188747700057
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14150]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Li, QF , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Li, QF,Li, ZX,Zhao, EG,et al. Density and temperature dependence of nucleon-nucleon elastic cross section[J]. PHYSICAL REVIEW C,2004,69(1):-.
APA	Li, QF,Li, ZX,Zhao, EG,&Li, QF , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2004).Density and temperature dependence of nucleon-nucleon elastic cross section.PHYSICAL REVIEW C,69(1),-.
MLA	Li, QF,et al."Density and temperature dependence of nucleon-nucleon elastic cross section".PHYSICAL REVIEW C 69.1(2004):-.