Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions

doi:10.1103/PhysRevC.95.024614

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions
	Lv, M; Ma, YG; Chen, JH; Fang, DQ; Zhang, GQ
	2017
发表期刊	PHYSICAL REVIEW C
ISSN	2469-9985
卷号	95 期号:2 页码:-
文章类型	期刊论文
摘要	Nuclear modification factors R-cp of protons and pions are investigated by simulating Au+Au collisions from 0.8A to 1.8A GeV in a framework of an isospin-dependent quantum molecular dynamics (IQMD) model. The Rcp of protons rise with an increase in the transverse particle momentum pT at different beam energies owing to radial flow and the multiple-collision effect. The rate of increase of Rcp is suppressed at higher beam energies. While the Rcp of pions display weaker pT dependence. By changing the in-medium nucleon-nucleon cross section, the Rcp of protons change a lot, while the Rcp of pions do not. In addition, by deactivating the N Delta -> NN and pi N -> Delta channels, the Rcp of protons change slightly in their increasing rates compared with the "original" case (with these two channels). However, the Rcp of pions is shifted down for the "no N Delta -> NN" case and has an inverse trend for the "no pi N -> Delta" case. Based on these observations, we argue that the observable Rcp is a suitable tool to better distinguish in-medium effects of protons and pions.
DOI	10.1103/PhysRevC.95.024614
收录类别	SCI
语种	英语
WOS记录号	WOS:000394662200006
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/27378
专题	中科院上海应用物理研究所2011-2018年
推荐引用方式 GB/T 7714	Lv, M,Ma, YG,Chen, JH,et al. Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions[J]. PHYSICAL REVIEW C,2017,95(2):-.
APA	Lv, M,Ma, YG,Chen, JH,Fang, DQ,&Zhang, GQ.(2017).Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions.PHYSICAL REVIEW C,95(2),-.
MLA	Lv, M,et al."Medium effect on the nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions".PHYSICAL REVIEW C 95.2(2017):-.

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