Determine the neutron skin type by relativistic isobaric collisions

Determine the neutron skin type by relativistic isobaric collisions
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通过相对论等压碰撞确定中子表皮类型

DOI:
10.1016/j.physletb.2021.136453
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发表时间:
2021-03
期刊:
影响因子:
4.4
通讯作者:
Wang Fuqiang
Wang Fuqiang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Xu Hao-jie;Li Hanlin;Wang Xiaobao;Shen Caiwan;Wang Fuqiang

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用特伦托模型研究了sNN = 200 GeV相对论4496 Ru+4496 Ru和4096 Zr+4096 Zr碰撞中中子皮对多重数和偏心率的影响.发现Nch分布的Ru+ Ru/Zr+ Zr比值和中-中碰撞的Nch分布的Ru+ Ru/Zr+ Zr比值对中子皮型(皮与晕)非常敏感。能量密度泛函理论(DFT)的最先进的计算有利于晕型中子皮,并很快可以面对实验数据。结果表明,晕型密度可以作为DFT密度的一个很好的替代,因此可以有效地利用椭圆流数据在中心碰撞探测核形变。我们在此提供了一个原理验证的场所,同时确定中子皮肤类型,厚度和核畸形。
The effects of neutron skin on the multiplicity (N ch) and eccentricity (ϵ 2) in relativistic 44 96 Ru+ 44 96 Ru and 40 96 Zr+ 40 96 Zr collisions at s NN= 200 GeV are investigated with the Trento model. It is found that the Ru+ Ru/Zr+ Zr ratios of the N ch distributions and ϵ 2 in mid-central collisions are exquisitely sensitive to the neutron skin type (skin vs. halo). The state-of-the-art calculations by energy density functional theory (DFT) favor the halo-type neutron skin and can soon be confronted by experimental data. It is demonstrated that the halo-type density can serve as a good surrogate for the DFT density, and thus can be efficiently employed to probe nuclear deformities by using elliptic flow data in central collisions. We provide hereby a proof-of-principle venue to simultaneously determine the neutron skin type, thickness, and nuclear deformity.
等压线密度分布对手性磁效应搜索的重要性
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影响因子: 8.6
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