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Determine the neutron skin type by relativistic isobaric collisions

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arxiv 2103.05595 v2 pith:7NC4C6F3 submitted 2021-03-09 nucl-th nucl-ex

Hao-jie Xu , Hanlin Li , Xiaobao Wang , Caiwan Shen , Fuqiang Wang This is my paper · ORCID
classification nucl-thnucl-ex
keywords skinneutroncollisionsdensitytypedatadetermineepsilon
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The effects of neutron skin on the multiplicity ($N_{\rm ch}$) and eccentricity($\epsilon_2$) in relativistic $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr collisions at $\sqrt{s_{_{\rm NN}}}=200$ GeV are investigated with the Trento model. It is found that the Ru+Ru/Zr+Zr ratios of the $N_{\rm ch}$ distributions and $\epsilon_{2}$ 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.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing the tetrahedral $\alpha$ clusters in relativistic $^{16}$O + $^{16}$O collisions

    nucl-th 2025-07 conditional novelty 6.0 of 10

    In 16O+16O collisions, the normalized flow ratio Norm(v2{2}/v2{4}) is mostly insensitive to tetrahedral deformation while Norm(v2{2}/v3{2}) is sensitive to both deformation and alpha-cluster correlations, but only aft...

  2. Unraveling the neutron skin thickness through jet charge in deep inelastic scattering

    hep-ph 2025-06 conditional novelty 6.0 of 10

    Jet charge distributions in electron-ion collisions are shown to be sensitive to neutron skin thickness, with peripheral collisions suppressing positive jets and enhancing negative jets.

  3. Resolution-matched nuclear geometry and the nucleon-size ambiguity in relativistic heavy-ion collisions

    nucl-th 2026-02 conditional novelty 5.0 of 10

    The strong nucleon-width dependence of the Pb+Pb hadronic cross section is a geometric-inflation artifact; with the folded density fixed, σ_AA is width-insensitive and can constrain the 208Pb neutron skin to Δr_np ∈ [...

  4. Scaling approach to rigid and soft nuclear deformation through flow fluctuations in high-energy nuclear collisions

    nucl-th 2025-09 conditional novelty 5.0 of 10

    Triangular flow four-particle cumulants scale linearly with the fourth moment of octupole deformation, allowing the mean and variance of 238U octupole deformation to be extracted separately.

  5. Experimental Search for the Chiral Magnetic Effect in Relativistic Heavy-Ion Collisions: A Perspective

    nucl-ex 2025-02 conditional novelty 3.0 of 10

    The chiral magnetic effect in heavy-ion collisions remains unconfirmed, with current data giving a 2.9-sigma hint in Au+Au and an upper limit near 10% in isobar collisions.

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