Phenomenological study on correlation between flow harmonics and mean transverse momentum in nuclear collisions

Journal Article · 09 August 2022 · SciPost Physics Proceedings

DOI: https://doi.org/10.21468/SciPostPhysProc.10.009 · OSTI ID:1880881

Zhang, Chunjian ^[1]; Jia, Jiangyong ^[2]; Huang, Shengli ^[1]

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1. Stony Brook University
2. Brookhaven National Laboratory, Stony Brook University

To assess the properties of the quark-gluon plasma formed in nuclear collisions, the Pearson correlation coefficient between flow harmonics and mean transverse momentum, \rho\left(v_{n}^{2},\left[p_{\mathrm{T}}\right]\right) $\rho (v_n^2,\left[p_T\right])$ , reflecting the overlapped geometry of colliding atomic nuclei, is measured. \rho\left(v_{2}^{2},\left[p_{\mathrm{T}}\right]\right) $\rho (v_2^2,\left[p_T\right])$ was found to be particularly sensitive to the quadrupole deformation of the nuclei. We study the influence of the nuclear quadrupole deformation on \rho\left(v_{n}^{2},\left[p_{\mathrm{T}}\right]\right) $\rho (v_n^2,\left[p_T\right])$ in Au+Au and U+U collisions at RHIC energy using AMPT transport model, and show that the \rho\left(v_{2}^{2},\left[p_{\mathrm{T}}\right]\right) $\rho (v_2^2,\left[p_T\right])$ is reduced by the quadrupole deformation \beta_2 ${\beta }_2$ and turns to change sign in ultra-central collisions (UCC).

• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-87ER40331
• OSTI ID: 1880881
• Journal Information: SciPost Physics Proceedings, Journal Name: SciPost Physics Proceedings Journal Issue: 10; ISSN 2666-4003
• Publisher: Stichting SciPostCopyright Statement
• Country of Publication: Netherlands
• Language: English