The effect of Lorentz-like force on collective flows of K+ in Au+Au collisions at 1.5 GeV/nucleon

The effect of Lorentz-like force on collective flows of K+ in Au+Au collisions at 1.5 GeV/nucleon
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类洛伦兹力对 1.5 GeV/核子 Au Au 碰撞中 K 集体流动的影响

DOI:
10.1007/s11433-017-9148-0
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发表时间:
2018-03
期刊:
Science China Physics,Mechanics & Astronomy
影响因子:
--
通讯作者:
Liu Ling
Liu Ling
中科院分区:
其他
文献类型:
--
作者:
Du YuShan;Wang YongJia;Li QingFeng;Liu Ling

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在阈能以下的重离子碰撞中产生K介子是研究致密核物质性质的重要途径。在这项研究中,基于最新版本的超相对论量子分子动力学模型,我们引入了K介子-核子(KN)势,包括标量和矢量(也称为洛伦兹类)方面。我们重新考察了KN势对Elab = 1.5GeV/核子的Au+Au碰撞中产生的K+介子集体流的影响,发现新引入的类洛仑兹力的贡献是非常重要的,特别是对于描述K+的定向流.最后,相应的有向流和椭圆流的KaoS数据可以同时很好地再现。
Producing kaon mesons in heavy-ion collisions at beam energies below their threshold energy is an important way to investigate the properties of dense nuclear matter. In this study, based on the newly updated version of the ultrarelativistic quantum molecular dynamics model, we introduce the kaon-nucleon (KN) potential, including both the scalar and vector (also dubbed Lorentz-like) aspects. We revisit the influence of the KN potential on the collective flow of K+ mesons produced in Au+Au collisions at Elab = 1.5 GeV/nucleon and find that the contribution of the newly included Lorentz-like force is very important, particulary for describing the directed flow of K+. Finally, the corresponding KaoS data of both directed and elliptic flows can be simultaneously reproduced well.
DOI: 10.1007/s11433-017-9075-1
发表时间: 2017-07
期刊: Science China Physics, Mechanics & Astronomy
影响因子: --
作者:
B. Guo;Naiyan Wang
通讯作者: B. Guo;Naiyan Wang
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发表时间: 1986-07
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影响因子: 4.4
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影响因子: 6.4
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影响因子: 8.6
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DOI: 10.1103/physrevc.65.044005
发表时间: 2002-04-01
期刊: PHYSICAL REVIEW C
影响因子: 3.1
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通讯作者: Yamazaki, T