Bottomonium suppression and elliptic flow in an anisotropic quark-gluon plasma using the quantum trajectories method

2025/12/15 by Ajaharul Islam, Islam, Ajaharul
Physics and Astronomy · #High-Energy Particle Collisions Research #Dust and Plasma Wave Phenomena #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2512.13377

Abstract

We study bottomonium dynamics in a momentum-space anisotropic quark-gluon plasma (QGP) using the quantum trajectories (QTraj) framework. The real part of the heavy-quark potential is obtained from a minimal extension of the Karsch-Mehr-Satz (KMS) potential, while the angle-averaged imaginary part is derived to leading order in the anisotropy parameter ξ and modeled to interpolate smoothly between the small- and large -ξ regimes. The resulting anisotropic complex potential is used to solve the real-time Schrödinger equation using QTraj for the evolution of bottomonium in heavy-ion collisions. Nuclear modification factors R_AA, double ratios, and elliptic flow coefficients v₂ for the Υ(1S), Υ(2S), and Υ(3S) states are computed, including feed-down contributions, in Pb-Pb collisions at √s_NN = 5.02 TeV. The QTraj-Aniso predictions successfully reproduce the observed sequential suppression pattern and non-zero elliptic flow, showing good agreement with experimental measurements from the ALICE, ATLAS, and CMS collaborations and demonstrating the relevance of path-length dependent suppression and medium anisotropy in quarkonium phenomenology.

Citations

• Semiclassical treatment of bottomonium suppression and regeneration in p+\rm Pb collisions
• Thermalization of Bottomonium in the Quark-Gluon Plasma
• Complex Heavy Quarkonium Potential in an Anisotropic Collisional Quark-Gluon Plasma
• The effect of anisotropy on the formation of heavy quarkonium bound states
• Bottomonium suppression from the three-loop QCD potential
• Bottomonium suppression in 5.02 and 8.16 TeV p-Pb collisions
• Recent Developments in Quarkonium as an Open Quantum System in Quark-Gluon Plasma
• Heavy quarkonium dynamics at next-to-leading order in the binding energy over temperature

Related

• Bottomonium suppression and elliptic flow in heavy-ion collisions
• Bottomonium suppression in the quark-gluon plasma -- From effective field theories to non-unitary quantum evolution
• Bottomonium suppression in 5.02 and 8.16 TeV p-Pb collisions
• Bottomonium suppression in pNRQCD and open quantum system approach
• Investigating quarkonium collectivity in heavy-ion collisions