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Exploring the compactness of $\alpha$ cluster in $^{16}$O nuclei with relativistic $^{16}$O+$^{16}$O collisions
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abstract
Probing the $\alpha$ cluster of $^{16}$O with the relativistic $^{16}$O+$^{16}$O collisions has raised great interest in the heavy ion community. However, the effects of the $\alpha$ cluster on the soft hadron observables vary largely among different studies. In this paper, we explain the differences by the compactness of the $\alpha$ cluster in oxygen, using iEBE-VISHNU hydrodynamic simulations with different initial state $\alpha$ cluster configurations. We also find several observables, such as the intensive skewness of the $[p_{\rm T}]$ correlator $\Gamma_{p_{\rm T}}$, the harmonic flows $v_2\{2\}$, $v_2\{4\}$, $v_3\{2\}$, and the $v_n^2-\delta[p_{\rm T}]$ correlations $\rho(v_{2}^{2}, [p_{\rm T}])$, $\rho(v_{3}^{2}, [p_{\rm T}])$ in $^{16}$O+$^{16}$O collisions are sensitive to the compactness of the $\alpha$ cluster in the colliding nuclei, which can be used to constrain the configurations of $^{16}$O in the future. Our study serves as an important step toward the quantitative exploration of the $\alpha$ cluster configuration in the light nuclei with relativistic heavy ion collisions.
Forward citations
Cited by 5 Pith papers
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In a transport-model study of U+U collisions at 193 GeV, dilepton yields normalized by charged multiplicity are shown to scale linearly with the square of the nuclear quadrupole deformation beta_2, with stronger sensi...
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Probing the tetrahedral $\alpha$ clusters in relativistic $^{16}$O + $^{16}$O collisions
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...
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