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Detecting nuclear mass distribution in isobar collisions via charmonium

Journal Article · · European Physical Journal. C, Particles and Fields (Online)

Abstract

The collective properties of final state hadrons produced in the high statistics $$$$_{44}^{96}$$$$ 44 96 Ru + $$$$_{44}^{96}$$$$ 44 96 Ru and $$$$_{40}^{96}$$$$ 40 96 Zr + $$$$_{40}^{96}$$$$ 40 96 Zr collisions at $$$$\sqrt{s_\textrm{NN}} = 200~\textrm{GeV}$$$$ s NN = 200 GeV are found to be significantly different. Such differences were argued to be precise probes of the difference in nucleon distribution in the isobar nuclei. We investigate the $$$$J/\psi $$$$ J / ψ production in the isobar collision via a relativistic transport approach. By comparing the isobar systems according to equal centrality bin and equal multiplicity bin, we find that the yield ratio of $$$$J/\psi $$$$ J / ψ is sensitive to the differences in both the number of binary collisions and the medium evolution. Besides, the elliptic flow $$$$v_2$$$$ v 2 of $$$$J/\psi $$$$ J / ψ 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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0012704
OSTI ID:
1985316
Alternate ID(s):
OSTI ID: 2417668
Journal Information:
European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 6 Vol. 83; ISSN 1434-6052
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

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