English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In the hydrodynamic model description of heavy ion collisions, the ellipticflow $v_2$ and triangular flow $v_3$ are sensitive to the quadrupoledeformation $\beta_2$ and octupole deformation $\beta_3$ of the collidingnuclei. The relations between $v_n$ and $\beta_n$ have recently been clarifiedand were found to follow a simple parametric form. The STAR Collaboration havejust published precision $v_n$ data from isobaric $^{96}$Ru+$^{96}$Ru and$^{96}$Zr+$^{96}$Zr collisions, where they observe large differences in centralcollisions $v_{2,\mathrm{Ru}}>v_{2,\mathrm{Zr}}$ and$v_{3,\mathrm{Ru}}<v_{3,\mathrm{Zr}}$. Using a transport model simulation, weshow that these orderings are a natural consequence of$\beta_{2,\mathrm{Ru}}\gg\beta_{2,\mathrm{Zr}}$ and$\beta_{3,\mathrm{Ru}}\ll\beta_{3,\mathrm{Zr}}$. We reproduce the centralitydependence of the $v_2$ ratio qualitatively and $v_3$ ratio quantitatively, andextract values of $\beta_2$ and $\beta_3$ that are consistent with thosemeasured at low energy nuclear structure experiments. STAR data provide thefirst direct evidence of strong octupole correlations in the ground state of$^{96}$Zr in heavy ion collisions. Our analysis demonstrates that flowmeasurements in high-energy heavy ion collisions, especially using isobaricsystems, are a new precision tool to study nuclear structure physics.

Evidence of quadrupole and octupole deformations in $^{96}$Zr+$^{96}$Zr and $^{96}$Ru+$^{96}$Ru collisions at ultra-relativistic energies