Regular Article - Theoretical Physics
Detecting nuclear mass distribution in isobar collisions via charmonium
Physics Department, Tsinghua University, 100084, Beijing, China
2 SUBATECH, Université de Nantes, IMT Atlantique, IN2P3/CNRS, 4 rue Alfred Kastler, 44307, Nantes Cedex 3, France
3 Department of Physics and Astronomy, Center for Nuclear Theory, Stony Brook University, 11794-3800, Stony Brook, NY, USA
Accepted: 22 May 2023
Published online: 15 June 2023
The collective properties of final state hadrons produced in the high statistics Ru + Ru and Zr + Zr collisions at are found to be significantly different. Such differences were argued to be precise probes of the difference in nucleon distribution in the isobar nuclei. We investigate the production in the isobar collision via a relativistic transport approach. By comparing the isobar systems according to equal centrality bin and equal multiplicity bin, we find that the yield ratio of is sensitive to the differences in both the number of binary collisions and the medium evolution. Besides, the elliptic flow of is qualitatively different from the light hadrons, and the ratio between Ru + Ru and Zr + Zr collisions is sensitive to the medium evolution. The charmonium production provides an independent probe to study the nucleon distribution in the isobar system.
© The Author(s) 2023
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