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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.14637 |
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| _version_ | 1866915295193464832 |
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| author | Jiang, Ze-Fang Fan, Xiang She, Duan Ye, Shasha Zhang, Ben-Wei |
| author_facet | Jiang, Ze-Fang Fan, Xiang She, Duan Ye, Shasha Zhang, Ben-Wei |
| contents | Using the TRENTo-3D initial condition model coupled with (3+1)-dimensional CLVisc hydrodynamic simulations, we systematically investigate the left-right splitting of elliptic flow ($Δv_{2}$) for soft particles in relativistic heavy-ion collisions. Our study reveals that the final distribution characteristics of $Δv_{2}$ are primarily depend on the odd flow harmonics and $v_{2}$ itself. We find that the parton transverse momentum scale $k_\mathrm{T}$ not only determines the geometric tilt of the QGP fireball but also significantly affects the rapidity dependence of both $v_1$ and $Δv_{2}$, providing new insights into the splitting mechanism of $Δv_{2}$. Furthermore, our results demonstrate that $Δv_{2} (p_\mathrm{T})$ exhibits significant sensitivity to influences such as the sub-nucleonic degrees of freedom (or `hotspots'), transverse momentum scale, and fragmentation region profile. By analyzing the $Δv_{2}$ and $Δv_{2}/v_{2}$ ratio, our findings provide new constraints on the uncertainties of the QGP initial state and provide additional constraints for refining model parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14637 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Left-right splitting of elliptic flow in heavy ion collisions: TRENTo-3D initialization and CLVisc hydrodynamic simulations Jiang, Ze-Fang Fan, Xiang She, Duan Ye, Shasha Zhang, Ben-Wei Nuclear Theory High Energy Physics - Phenomenology Using the TRENTo-3D initial condition model coupled with (3+1)-dimensional CLVisc hydrodynamic simulations, we systematically investigate the left-right splitting of elliptic flow ($Δv_{2}$) for soft particles in relativistic heavy-ion collisions. Our study reveals that the final distribution characteristics of $Δv_{2}$ are primarily depend on the odd flow harmonics and $v_{2}$ itself. We find that the parton transverse momentum scale $k_\mathrm{T}$ not only determines the geometric tilt of the QGP fireball but also significantly affects the rapidity dependence of both $v_1$ and $Δv_{2}$, providing new insights into the splitting mechanism of $Δv_{2}$. Furthermore, our results demonstrate that $Δv_{2} (p_\mathrm{T})$ exhibits significant sensitivity to influences such as the sub-nucleonic degrees of freedom (or `hotspots'), transverse momentum scale, and fragmentation region profile. By analyzing the $Δv_{2}$ and $Δv_{2}/v_{2}$ ratio, our findings provide new constraints on the uncertainties of the QGP initial state and provide additional constraints for refining model parameters. |
| title | Left-right splitting of elliptic flow in heavy ion collisions: TRENTo-3D initialization and CLVisc hydrodynamic simulations |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.14637 |