Bhatta, S., Zhang, C., & Jia, J. (2024). Energy dependence of heavy-ion initial condition in isobar collisions. arXiv preprint arXiv:2301.01294v4.
This study investigates the energy and rapidity dependence of the initial condition in heavy-ion collisions, specifically focusing on the differences observed in collisions of isobar nuclei (nuclei with the same mass number but different structure) like 96Ru+96Ru and 96Zr+96Zr.
The researchers employed a transport model (AMPT) to simulate 96Ru+96Ru and 96Zr+96Zr collisions at two different energies: √sNN = 0.2 TeV (RHIC) and 5.02 TeV (LHC). They analyzed various bulk observables, including charged particle multiplicity (Nch), elliptic flow (v2), and triangular flow (v3), to understand the impact of nuclear structure differences on these observables. The study also delved into the contributions of different sources of eccentricities to the final state harmonic flow and their energy dependencies.
The study concludes that collisions of isobar nuclei, with their controlled structural differences, offer valuable insights into the initial conditions of heavy-ion collisions. The observed energy dependence of the effects emphasizes the importance of studying these collisions at various energies to gain a comprehensive understanding of the initial state.
This research contributes significantly to the field of heavy-ion physics by providing a deeper understanding of the role of initial conditions in shaping the final state observables. The findings have implications for interpreting experimental data from both RHIC and LHC and highlight the need for more sophisticated models that incorporate realistic nuclear structure effects and their energy dependence.
The study acknowledges the limitations of the employed HIJING model in capturing the longitudinal dependence of the initial condition. Future research should explore more realistic models incorporating detailed nuclear parton distribution functions (nPDF) and effects like gluon saturation to improve the accuracy of simulations. Additionally, extending this analysis to higher-order correlation observables could provide further insights into the energy dependence of initial conditions.
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by Somadutta Bh... ที่ arxiv.org 10-10-2024
https://arxiv.org/pdf/2301.01294.pdfสอบถามเพิ่มเติม