2017/04/17 by Xiaojian Du, M. He, Min He +1 · 11 citations
Chemistry · Physics and Astronomy · #Boltzmann equation #Chemistry #Coalescence (physics) #Dissociation (chemistry) #Hadron #High-Energy Particle Collisions Research #Kinetic energy #Large Hadron Collider #Lattice QCD #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Parton #Physical chemistry #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Spectral line #Thermodynamics #hep-ph #nucl-th
paper · pdf · open access · doi:10.1016/j.nuclphysa.2017.05.079
published in Nuclear Physics A 967, 904-907 (Elsevier BV) · 4 pages, 6 figures; Proceeding on XXVIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2017) (Chicago, IL, USA), February 6-11, 2017
arxiv created 2017/04/17 · openalex publication_date 2017/09/25 · arxiv updated 2018/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 (pT) dependence of the yields. Both gluo-dissociation and inelastic parton-induced break-up 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 pT spectra of the regeneration contribution. We also update the equation of state for the bulk medium by a parameterization of 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 pT spectra.