Principal component analysis of spectral fluctuations in heavy-ion collisions yields thermal and geometric normal modes that explain 99.5% of variance and account for measured flow observables v0(pT) and v02(pT).
Du, [arXiv:2508.07184 [hep-ph]]
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Species-resolved scaling functions for azimuthal anisotropy from iEBE-VISHNU simulations of Pb+Pb collisions collapse robustly across kinematics and species, enabling constraints on attenuation, collective expansion, and hadronic re-scattering via an energy-dependent baseline.
Mean transverse momentum fluctuations in baryon-rich matter are driven by energy and baryon density variations, remain robust to baryon diffusion, and show splitting between protons and antiprotons.
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Thermal and geometric normal modes of spectral fluctuations in heavy-ion collisions
Principal component analysis of spectral fluctuations in heavy-ion collisions yields thermal and geometric normal modes that explain 99.5% of variance and account for measured flow observables v0(pT) and v02(pT).
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Species-Resolved Scaling of Azimuthal Anisotropy: Constraining Attenuation, Collective Expansion, and Hadronic Dynamics in Hydrodynamic Simulations
Species-resolved scaling functions for azimuthal anisotropy from iEBE-VISHNU simulations of Pb+Pb collisions collapse robustly across kinematics and species, enabling constraints on attenuation, collective expansion, and hadronic re-scattering via an energy-dependent baseline.
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Rapidity dependence of mean transverse momentum fluctuation and decorrelation in baryon-dense medium
Mean transverse momentum fluctuations in baryon-rich matter are driven by energy and baryon density variations, remain robust to baryon diffusion, and show splitting between protons and antiprotons.