Determine the neutron skin type by relativistic isobaric collisions

9 Mar 2021  ·  Hao-jie Xu, Hanlin Li, Xiaobao Wang, Caiwan Shen, Fuqiang Wang ·

The effects of neutron skin on the multiplicity ($N_{\rm ch}$) and elliptic flow ($v_2$) 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 $v_2$ 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 $v_2$ data in central collisions. We provide hereby a proof-of-principle venue to simultaneously determine the neutron skin type, thickness, and nuclear deformity. read more

PDF Abstract

Code Add Remove Mark official

No code implementations yet. Submit your code now

Categories

Nuclear Theory Nuclear Experiment