In-Medium Bottomonium Production in Heavy-Ion Collisions

Abstract

We study bottomonium production in heavy-ion collisions using a transport model which utilizes kinetic-rate and Boltzmann equations to calculate the energy, centrality and transverse-momentum ($p_T$) dependence of the yields. Both gluo-dissociation and inelastic parton-induced break-up including interference effects are improved over previous work by using in-medium binding energies from a thermodynamic $T$-matrix approach. A coalescence model with bottom-quark spectra from Langevin simulations is implemented to account for thermal off-equilibrium effects in the $p_T$-spectra of the regeneration contribution. We also update the equation of state for the bulk medium by extracting it from lattice-QCD results. A systematic analysis of bottomonium observables is conducted in comparison to RHIC and LHC data. In particular, the off-equilibrium bottom-quark spectra are found to play an important role in the bottomonium $p_T$ spectra.

arXiv comment4 pages, 6 figures; Proceeding on XXVIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2017) (Chicago, IL, USA), February 6-11, 2017

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Cited by in corpus (8)

• Heavy Quarkonium in Extreme Conditions
• Color Screening and Regeneration of Bottomonia in High-Energy Heavy-Ion Collisions
• Theoretical Perspective on Quarkonia from SPS via RHIC to LHC
• Gluo-dissociation of Heavy Quarkonium in the Quark-Gluon Plasma Revisited
• Bottomonium suppression at RHIC and LHC in an open quantum system approach
• Transverse momentum dependent feed-down fractions for bottomonium production
• Production of bottomonia states in proton+proton and heavy-ion collisions
• Finite volume effects on quarkonium dissociation temperature in an impenetrable QGP sphere