SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 66: Heavy-Ion Collisions and QCD Phases XIII
HK 66.3: Vortrag
Donnerstag, 23. März 2023, 16:15–16:30, SCH/A315
Studies of jets in heavy-ion collisions at ALICE with a novel mixed-event approach — •Nadine Grünwald for the ALICE Germany collaboration — Physikalisches Institut Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg
With heavy-ion collisions QCD matter is studied at very high temperatures and densities. The ALICE experiment is dedicated to measure heavy-ion collisions at the LHC. The Quark-Gluon Plasma (QGP) is produced in those collisions where quarks and gluons are deconfined and new physics phenomena emerge. The QGP can be studied using jets, which are produced in the early stage of the collisions. Depending on the structure of the QGP, the jets lose energy in various ways. A major difficulty in heavy-ion jet measurements is the huge amount of uncorrelated particles which distorted the jet measurements, especially at lower pT. In order to perform low pT jet measurements, a novel mixed-event technique is exploited. In this talk the mixed events as a new approach to describe the uncorrelated background in heavy-ion jet measurements at ALICE are presented. The description of the uncorrelated background by mixed events enables for the first time inclusive charged jet measurements down to low pT at collision energies of √sNN = 5.02 TeV. In particular no cuts on the reconstructed jet energies are necessary.