2020/12/15 by Moritz Greif, Carsten Greiner, Simon Plätzer +2 · 6 citations
Physics and Astronomy · #Event (particle physics) #Event generator #Gluon #Hadron #Hadronization #High-Energy Particle Collisions Research #Momentum (technical analysis) #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark–gluon plasma #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.103.054011
published in Physical review. D/Physical review. D. 103(5) (American Physical Society) · 12 pages, 15 figures
arxiv created 2020/12/15 · openalex publication_date 2021/03/10 · arxiv updated 2021/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Following an explicit example, we present the chain of steps required for an event-by-event description of hadron production in high energy hadronic and nuclear collisions. We start from incoming nuclei, described in the color glass condensate effective theory, whose collision creates the gluon fields of the glasma. Individual gluons are then sampled from the gluon fields' Husimi (smeared Wigner) distributions and clustered using a new spacetime based algorithm. Clusters are fed into the Herwig event generator, which performs the hadronization, conserving energy and momentum. We discuss the physical implications of smearing and problems with the quasiparticle picture for the studied processes. We compute spectra of charged hadrons and identified particles and their azimuthal momentum anisotropies, and address systematic uncertainties on observables, resulting from the general lack of detailed knowledge of the hadronization mechanism.