Collective flows of pions in Au plus Au collisions at energies 1.0 and 1.5 GeV/nucleon

doi:10.1103/PhysRevC.97.034602

	Collective flows of pions in Au plus Au collisions at energies 1.0 and 1.5 GeV/nucleon
	Liu, Yangyang 1,2; Wang, Yongjia 1; Li, Qingfeng 1,3; Liu, Ling 2
刊名	PHYSICAL REVIEW C
	2018-03-06
卷号	97 页码:034602
ISSN号	2469-9985
DOI	10.1103/PhysRevC.97.034602
英文摘要	Based on the newly updated version of the ultrarelativistic quantum molecular dynamics (UrQMD) model, the pion potentials obtained from the in-medium dispersion relation of the Delta-hole model and from the modified phenomenological approach are further introduced. Both the rapidity y(0) and transverse-velocity u(t0) dependence of directed v(1) and elliptic v(2) flows of pi(+) and pi(-) charged mesons produced from Au+Au collisions at two beam energies of 1.0 and 1.5 GeV/nucleon and within a large centrality region of 0 < b(0) < 0.55 are scanned. Calculations with pion potentials as well as without considering the pion potential are compared to the newly experimental data released by the FOPI Collaboration at GSI Helmholtzzentrum fur Schwerionenforschung. It is found that the directed flow is more sensitive to the pion potential than the elliptic one, and the attractive pion potential from the phenomenological B mode of the phenomenological approach is too strong to describe the flow data and can be safely ruled out. The relatively weak pion potential from the Delta-hole model can supply a good description for the FOPI data of both flows as functions of both centrality and rapidity. A two-peak structure occurs in the transverse-velocity-dependent directed flow but the elliptic flow drops monotonously with increasing u(t0). Finally, both v(1) and v(2) flows with large u(t0) from semicentral heavy-ion collisions can be taken as sensitive probes for the pion potential.
资助项目	National Natural Science Foundation of China[11505057] ; National Natural Science Foundation of China[11375062] ; National Natural Science Foundation of China[11747312] ; Zhejiang Provincial Natural Science Foundation of China[LY18A050002]
WOS关键词	HEAVY-ION COLLISIONS ; EQUATION-OF-STATE ; SYMMETRY ENERGY ; TRANSPORT SIMULATIONS ; MICROSCOPIC MODELS ; NUCLEAR-MATTER ; CROSS-SECTION ; DELTA ; EMISSION ; DYNAMICS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000426749700004
资助机构	National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46336]
专题	中国科学院近代物理研究所
作者单位	1.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China 2.Shenyang Normal Univ, Phys Sci & Tech Coll, Shenyang 110034, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yangyang,Wang, Yongjia,Li, Qingfeng,et al. Collective flows of pions in Au plus Au collisions at energies 1.0 and 1.5 GeV/nucleon[J]. PHYSICAL REVIEW C,2018,97:034602.
APA	Liu, Yangyang,Wang, Yongjia,Li, Qingfeng,&Liu, Ling.(2018).Collective flows of pions in Au plus Au collisions at energies 1.0 and 1.5 GeV/nucleon.PHYSICAL REVIEW C,97,034602.
MLA	Liu, Yangyang,et al."Collective flows of pions in Au plus Au collisions at energies 1.0 and 1.5 GeV/nucleon".PHYSICAL REVIEW C 97(2018):034602.