Entropy production in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider

• Verfasst von: Hanus, Patrick [VerfasserIn]
• Verfasst von: Reygers, Klaus [VerfasserIn]
• Verfasst von: Mazeliauskas, Aleksas [VerfasserIn]
• Titel: Entropy production in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider
• Verf.angabe: Patrick Hanus, Klaus Reygers, and Aleksas Mazeliauskas
• E-Jahr: 2019
• Jahr: 4 December 2019
• Fussnoten: Gesehen am 13.01.2020 ; Im Titel ist "pp" kursiv geschrieben
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2019
• Band/Heft Quelle: 100(2019,6) Artikel-Nummer 064903, 12 Seiten
• ISSN Quelle: 2469-9993
• DOI: doi:10.1103/PhysRevC.100.064903
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1687244286

Abstract

We use experimentally measured identified particle spectra and Hanbury Brown-Twiss radii to determine the entropy per unit rapidity dS/dy produced in √s=7TeV pp and √sNN=2.76TeV Pb-Pb collisions. We find that dS/dy=11335±1188 in 0%-10% Pb-Pb, dS/dy=135.7±17.9 in high-multiplicity pp, and dS/dy=37.8±3.7 in minimum bias pp collisions and compare the corresponding entropy per charged particle (dS/dy)/(dNch/dy) to predictions of statistical models. Finally, we use the quantum chromodynamics kinetic theory pre-equilibrium and viscous hydrodynamics to model entropy production in the collision and reconstruct the average temperature profile at τ0≈1fm/c for high-multiplicity pp and Pb-Pb collisions.