2017/06/30 by Xiaojian Du, M. He, Min He +1 · 141 citations
Chemistry · Medicine · Physics and Astronomy · Social Sciences · #Biology #Cell biology #Chemistry #Heavy ion #Ion #Regeneration (biology) #Urologic and reproductive health conditions #Vietnamese History and Culture Studies #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.96.054901
published in Physical Review C 96(5) (American Institute of Physics) · 26 pages, 52 figures
arxiv created 2017/11/02 · openalex publication_date 2017/11/03 · arxiv updated 2017/11/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The production of ground-state and excited bottomonia in ultrarelativistic heavy-ion collisions is investigated within a kinetic-rate equation approach including regeneration. We augment our previous calculations by an improved treatment of medium effects, with temperature-dependent binding energies and pertinent reaction rates, B-meson resonance states in the equilibrium limit near the hadronization temperature, and a lattice-QCD based equation of state for the bulk medium. In addition to the centrality dependence of the bottomonium yields, we compute their transverse-momentum (pT) spectra and elliptic flow with momentum-dependent reaction rates and a regeneration component based on b-quark spectra from a nonperturbative transport model of heavy-quark diffusion. The latter has noticeable consequences for the shape of the bottomonium pT spectra. We quantify how uncertainties in the various modeling components affect the predictions for observables. Based on this we argue that the \mathrm\ensuremathΥ(1S) suppression is a promising observable for mapping out the in-medium properties of the QCD force, while \mathrm\ensuremathΥ(2S) production can help to quantify the role of regeneration from partially thermalized b quarks.