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Summary
The ALICE Collaboration reports the first measurements of higher-order harmonic NSC(6,2) and NSC(6,3) in Pb-Pb collisions at √sNN = 5.02 TeV, providing new insights into the evolution of heavy-ion collisions.
Highlights
- First measurements of higher-order harmonic NSC(6,2) and NSC(6,3) in Pb-Pb collisions.
- NSC(6,3) shows a hint of decreasing trend towards peripheral collisions.
- NSC(6,2) and NSC(6,3) are positive, indicating correlated event-by-event fluctuations.
- Comparison with hydrodynamic calculations shows varying levels of agreement.
- Bayesian analysis reveals sensitivity of model parameters to higher-order harmonic NSC.
- Results provide new constraints on initial conditions and transport properties in heavy-ion collisions.
Key Insights
- The measurements of NSC(6,2) and NSC(6,3) provide new insights into the evolution of heavy-ion collisions, revealing the importance of higher-order harmonic correlations in understanding the underlying physics.
- The positive values of NSC(6,2) and NSC(6,3) indicate that the event-by-event fluctuations of the flow amplitudes are correlated, suggesting a non-trivial relationship between the different harmonic orders.
- The comparison with hydrodynamic calculations highlights the varying levels of agreement between the data and the models, indicating the need for further refinement of the theoretical frameworks.
- The Bayesian analysis demonstrates the sensitivity of the model parameters to the higher-order harmonic NSC, underscoring the importance of incorporating these observables in model calibration.
- The results provide new constraints on the initial conditions and transport properties in heavy-ion collisions, offering a more nuanced understanding of the complex dynamics at play.
- The measurements of NSC(6,2) and NSC(6,3) demonstrate the power of multi-particle correlations in probing the underlying physics of heavy-ion collisions, highlighting the need for further experimental and theoretical investigations.
- The observed centrality dependence of NSC(6,3) suggests a non-trivial interplay between the initial conditions and the subsequent evolution of the system, warranting further exploration in future studies.
Mindmap
Citation
ALICE Collaboration. (2024). First measurement of symmetric cumulants of hexagonal flow harmonics in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2412.15873