Polarized Dissociation and Spin Alignment of Moving Quarkonium in Quark-Gluon Plasma

Abstract

Recent experiments have found spin alignment of $J/\psi$ with respect to event plane in heavy ion collisions, suggesting a medium effect that is spin dependent. We propose a possible mechanism with polarized dissociation from the motion of $J/\psi$ with respect to the medium. We calculate polarized dissociation rate for quarkonium spin triplet state from spin chromomagnetic coupling in the potential non-relativistic QCD framework. This is done for the leading order gluo-dissociation process and next to leading order inelastic Coulomb scattering process. The polarized dissociation rate is expressed as a function of relative velocity between quarkonium and QGP and the quantization axis. Applying the polarized dissociation rate to quarkonium evolution with dissociation effect only in a Bjorken flow, we find the spin $0$ state to dissociate less than the other spin states, leading to positive ${\rho }_{00}-1/3$. Regeneration contribution is expected to give a contribution with the opposite sign.

arXiv comment28 pages, 8 figures

References in corpus (33)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Global $\Lambda$ hyperon polarization in nuclear collisions: evidence for the most vortical fluid
• Effective field theories for heavy quarkonium
• (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
• 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
• Polarization of massive fermions in a vortical fluid
• Medium Effects on Charmonium Production at ultrarelativistic energies available at the CERN Large Haron Collider
• Thermal vorticity and spin polarization in heavy-ion collisions
• Pattern of Global Spin Alignment of $\varphi$ and $K^{\ast 0}$ mesons in Heavy-Ion Collisions
• Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature
• Perturbative Thermal QCD: Formalism and Applications
• Transverse Momentum Spectra of J/ψin Heavy-Ion Collisions
• Thermal width and gluo-dissociation of quarkonium in pNRQCD
• Thermal width and quarkonium dissociation by inelastic parton scattering
• Spin alignment of vector mesons in heavy-ion collisions
• J/psi transport in QGP and Pt distribution at SPS and RHIC
• Quarkonium inside Quark-Gluon Plasma: Diffusion, Dissociation, Recombination and Energy Loss
• Measurement of the J/$\psi$ polarization with respect to the event plane in Pb-Pb collisions at the LHC
• Phi meson production in relativistic heavy ion collisions
• Spin alignment of vector mesons by glasma fields
• Quarkonium-Hadron Interactions in Perturbative QCD
• First measurement of quarkonium polarization in nuclear collisions at the LHC
• Vector meson's spin alignments in high energy reactions
• Gluo-dissociation of Heavy Quarkonium in the Quark-Gluon Plasma Revisited
• 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
• Quarkonium Polarization in Medium from Open Quantum Systems and Chromomagnetic Correlators

Cited by in corpus (1)

• Spin alignment of quarkonia in vortical quark-gluon plasma