Speaker
Description
In heavy-ion collisions, azimuthal anisotropy of the final state clearly reflects the initial geometric configuration. Recent studies have shown that the anisotropic flow $v_n$ values are enhanced by nuclear deformation parameter $\beta_n$, especially in ultra-central collisions. In mid-central collisions, the $v_n$ values are also influenced by half-height radius $R_0$ and nuclear skin $a_0$. These influences can be well revealed by ratios of observables between two isobaric collision systems, $^{96}$Ru+$^{96}$Ru and $^{96}$Zr+$^{96}$Zr collisions, which have different structures. While compared to isobar collisions, isobar+large nuclei, such as $^{96}$Ru+$^{197}$Au and $^{96}$Zr+$^{197}$Au collisions, provide a clearer approach to studying nuclear structure, as they involve a single elliptical or triangular shape rather than a superposition of two elliptic or triangular patterns. The results suggest even larger $v_2$ and $v_3$ difference between the two isobar+Au collisions. The infulence on flow fluctuation will also be discussed. The results can help to understand the nature of the initial state fluctuations and nuclear structure, providing valuable input for future experimental measurements.
| Category | Theory |
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