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Paper proposal for Energy dependence of reaction plane correlated triangular flow in Au+Au collisions

Updated on Fri, 2025-04-25 09:11. Originally created by sharangrav on 2025-04-23 15:17.

Paper Title: Energy dependence of reaction plane correlated triangular flow in Au+Au collisions
Target journal: Phys. Rev. C
PAs: Chitrasen Jena, Cameron Racz, Richard Seto, Sharang Rav Sharma
PA representative: Sharang Rav Sharma

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Abstract:

We present measurements of the collision energy dependence of the first-order event-plane correlated triangular flow (v3) in Au+Au collisions at √sNN = 3.2 – 4.5 GeV, using fixed target data from the STAR experiment. A decreasing trend in the v3 magnitude for protons is observed with increasing collision energy. The v3 signal is further decomposed into its odd and even components, revealing that the odd component (v3odd ) exhibits a significantly stronger dependence on rapidity, transverse momentum (pT ), centrality, and collision energy compared to the even component (v3even ). Comparisons with the JAM transport model indicate that the inclusion of a mean-field potential is essential for the generation of the observed v3 signal, highlighting the importance of hadronic interactions in this energy regime.

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Paper Figures:

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Summary:

In summary, a detailed investigation of the third-order harmonic flow coefficient, v₃, for protons in Au+Au collisions at √sNN = 3.2, 3.5, 3.9, and 4.5 GeV has been presented. The study explores the dependence of v₃ on rapidity (y), transverse momentum (pT), collision centrality, and beam energy. The magnitude of v₃ increases with increasing rapidity, transverse momentum, and collision centrality. However, as the beam energy increases, the strength of v₃ decreases, approaching zero near √sNN = 4.5 GeV. The odd component of v₃ exhibits similar trends, demonstrating strong dependence on y, pT, and centrality, while the even component remains consistent with zero within uncertainties. Comparisons with the JAM transport model reveal that the cascade mode (without mean-field interactions) fails to reproduce the observed v₃ signal. However, with inclusion of mean-field potential, JAM provides a qualitative agreement with the experimental data. This highlights the significance of hadronic mean-field interactions in development of the v3 signal at low collision energies.
 
 
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Presentations:
International conferences:

  1. https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2025/Measurement-Anisotropic-Flow-BES-II-Energies-RHIC-STAR-0 (Quark Matter 2025; April 9, 2025)
  2. https://drupal.star.bnl.gov/STAR/presentations/10th-Asian-Triangle-Heavy-Ion-Conference-ATHIC-2025/Study-first-order-event-plane-corr (ATHIC 2025; January 15, 2025 )
  3. https://drupal.star.bnl.gov/STAR/presentations/ICNFP-2024/Study-first-order-event-plane-correlated-directed-and-triangular-flow-fixed (ICNFP 2024 (Ext.); December 12, 2024)
  4. https://drupal.star.bnl.gov/STAR/blog/sharangrav/Overview-fixed-target-runs-RHIC-STAR (EMMI Workshop 2024; Feb 21, 2024)
  5. https://drupal.star.bnl.gov/STAR/presentations/Dynamics-QCD-2023/First-order-event-plane-correlated-directed-and-triangular-flow-fixe (DQCD 2023; October 7, 2023)
  6. https://drupal.star.bnl.gov/STAR/presentations/Quark-Matter-2023/Directed-and-triangular-flow-identified-hadrons-and-light-nuclei-f-0 (QM 2023; September 5, 2023 )
  7. https://drupal.star.bnl.gov/STAR/presentations/ISMD-2023/First-order-event-plane-correlated-directed-and-triangular-flow-fixed-targ-0 (ISMD 2023; August 21, 2023)
STAR collaboration meetings

  1. https://drupal.star.bnl.gov/STAR/blog/sharangrav/Reaction-plane-correlated-directed-and-triangular-flow-AuAu-collisions-high-baryon-0 (October 1, 2024)
  2. https://drupal.star.bnl.gov/STAR/blog/sharangrav/Study-v1-and-v3-FXT-energies (March 1, 2023)
  3. https://drupal.star.bnl.gov/STAR/system/files/Upload_BES-II_workshop_28.pdf  (June 28, 2023)

STAR FCV- PWG meetings

  1. https://drupal.star.bnl.gov/STAR/blog/psinha/v3-measurement-FXT-0 (May 29, 2024)
  2. https://drupal.star.bnl.gov/STAR/system/files/Sharang_fcv_14_June.pdf (June 26, 2023)
  3. https://drupal.star.bnl.gov/STAR/system/files/Sharang_fcv_23_May.pdf (May 23, 2023)
  4. https://drupal.star.bnl.gov/STAR/system/files/preliem_upload_star_fcv.pdf (April 12, 2023)
  5. https://drupal.star.bnl.gov/STAR/system/files/Light_nuclei_v1_FXT_2 _Sharang_0.pdf (Feb 1, 2023)
  6. https://drupal.star.bnl.gov/STAR/system/files/identified_v1_v3_FXT_0.pdf (Jan 11, 2023)
  7. https://drupal.star.bnl.gov/STAR/system/files/light_nuclei_v1_srs _fcv.pdf (Nov 23, 2022)
  8. https://drupal.star.bnl.gov/STAR/system/files/v1_v3_FXT_sharang.pdf (Sept 28, 2022)

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