Spin alignment of quarkonia in vortical quark-gluon plasma

Abstract

The spin alignment of $J/\psi$ with respect to event plane in relativistic heavy ion collisions exhibits a significant signal. We propose a possible mechanism for spin alignment through spin dependent dissociation of quarkonia in a vortical quark-gluon plasma. The spin dependent dissociation is realized through inelastic scattering between constituents of quarkonium and those of quark-gluon plasma polarized by the vorticity. The spin dependent dissociation rate is found to depend on the directions of vorticity, quantization axis, and quark momentum. We implement our results in a dissociation dominated evolution model for quarkonia in the Bjorken flow, finding the spin $0$ state is slightly suppressed compared to the average of the other two, which is consistent with the sign found in experiments. We also find absence of logarithmic enhancement in binding energy in the vortical correction to dissociation rate, which is understood from the requirement that a spin dependent dissociation can only come from quark coupling to a pair of chromomagnetic and chromoelectric field.

arXiv comment25 pages, 3 figures

References in corpus (43)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Global $\Lambda$ hyperon polarization in nuclear collisions: evidence for the most vortical fluid
• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions
• Relativistic distribution function for particles with spin at local thermodynamical equilibrium
• Spin Alignment of Vector Mesons in Non-central A+A Collisions
• Rotating quark-gluon plasma in relativistic heavy ion collisions
• Polarization of $\Lambda$ ($\bar{\Lambda }$) hyperons along the beam direction in Au+Au collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV
• Vorticity in Heavy-Ion Collisions
• Global $\Lambda$ polarization in heavy-ion collisions from a transport model
• Thermal versus Direct $J/\Psi$ Production in Ultrarelativistic Heavy-Ion Collisions
• Charmonium Suppression and Regeneration from SPS to RHIC
• Shear-induced spin polarization in heavy-ion collisions
• Polarization of massive fermions in a vortical fluid
• Medium Effects on Charmonium Production at ultrarelativistic energies available at the CERN Large Haron Collider
• Local polarization and isothermal local equilibrium in relativistic heavy ion collisions
• Charmonium in Medium: From Correlators to Experiment
• Nonlinear Responses of Chiral Fluids from Kinetic Theory
• Pattern of Global Spin Alignment of $\varphi$ and $K^{\ast 0}$ mesons in Heavy-Ion Collisions
• Transverse Momentum Spectra of J/ψin Heavy-Ion Collisions
• Collisional energy loss of a fast heavy quark in a quark-gluon plasma
• Thermal width and quarkonium dissociation by inelastic parton scattering
• Reexamination of local spin polarization beyond global equilibrium in relativistic heavy ion collisions
• A quark coalescence model for polarized vector mesons and baryons
• Spin alignment of vector mesons in heavy-ion collisions
• Foundations and Applications of Quantum Kinetic Theory
• Quarkonium inside Quark-Gluon Plasma: Diffusion, Dissociation, Recombination and Energy Loss
• Local and global polarization of $\Lambda$ hyperons across RHIC-BES energies: the roles of spin hall effect, initial condition and baryon diffusion
• Spin alignment of vector mesons by glasma fields
• Zilch Vortical Effect, Berry Phase, and Kinetic Theory
• Quarkonium-Hadron Interactions in Perturbative QCD
• Quantum Kinetic Theory for Quantum Electrodynamics
• Wigner functions and quantum kinetic theory of polarized photons
• The chiral vortical effect in Wigner function approach
• Vector meson's spin alignments in high energy reactions
• Shear induced polarization: Collisional contributions
• Collisional corrections to spin polarization from quantum kinetic theory using Chapman-Enskog expansion
• Gluo-dissociation of Heavy Quarkonium in the Quark-Gluon Plasma Revisited
• Polarization Rotation of Chiral Fermions in Vortical Fluid
• Heavy Quarkonium Dissociation by Thermal Gluons at Next-to-leading Order in the Quark-Gluon Plasma
• The spin alignment of vector mesons with light front quarks
• Transverse and longitudinal spin alignment from color fields in heavy ion collisions
• Polarized Dissociation and Spin Alignment of Moving Quarkonium in Quark-Gluon Plasma

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