Overview of ALICE results on azimuthal correlations using neutral- and heavy-flavor triggers

10th International Workshop on High-pT Physics in the RHIC/LHC Era

Pochybova, Sona^1

MTA Wigner RCP, 29 - 33 Konkoly-Thége Miklós Street, Budapest

1121, Hungary^1

关键词: Azimuthal correlations;    Azimuthal distributions;    Charged hadrons;    Dense matter;    Heavy ion collision;    Nuclear modification factors;    Pb-Pb collisions;    Pp collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/805/1/012011/pdf
DOI  :  10.1088/1742-6596/805/1/012011

来源: IOP

【 摘 要 】

The ALICE detector is dedicated to studying the properties of hot and dense matter created in heavy-ion collisions. Among the probes used to investigate these properties are high-momentum particles, which originate in hard-scatterings occurring before the fireball creation. The fragments of hard scatterings interact with the hot and dense matter and via this interaction their spectra and azimuthal distributions are modified. This is probed by the measurement of the nuclear modification factor, where the pTspectra obtained in Pb-Pb collisions are compared to a pp baseline. A strong suppression of charged hadrons as well as neutral- and heavy-flavor mesons was observed at pT> 4 GeV/c. Azimuthal correlations, using high-momentum (pT> 4 GeV/c) hadrons as triggers, can provide further insight into how the presence of the medium modifies the final kinematic distributions of the particles. Comparison with theoretical models can be used to test their predictions about the properties of the medium. We give an overview of ALICE azimuthal-correlation measurements of neutral- and heavy-flavor mesons with charged hadrons in pp collisions at and Pb-Pb collisions at . We also present a measurement of the π0correlation with jets in pp collisions at.