Measurement of the distribution of event-by-event harmonic flow in Pb-Pb collisions at =2.76 TeV with the ATLAS detector

Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus–Nucleus Collisions 2012

Mohapatra, Soumya^1

Departments of Physics and Astronomy and Chemistry, Stony Brook University, NY 11794, United States^1

关键词: ATLAS detectors;    Collision geometry;    Flow coefficients;    Heavy ion collision;    Hydrodynamic response;    Measurements of;    Nonlinear effect;    Pb-Pb collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012024/pdf
DOI  :  10.1088/1742-6596/446/1/012024

来源: IOP

【 摘 要 】

In recent years, the measurement of harmonic flow coefficients vnhas provided important insight into the hot and dense matter created in heavy ion collisions at RHIC and LHC. These coefficients are now understood to reflect the hydrodynamic response of the produced medium to the collision geometry. Due to finite number of nucleons in the system, the collision geometry can fluctuate from one event to another, and hence measuring the full distribution of the event-by-event vncoefficients can provide better insights on the nature of these fluctuations and possible non-linear effects in the hydrodynamic response. This proceeding presents the first measurements of the event-by-event vndistributions for n=2-4 in Pb-Pb collisions at 2.76 TeV with the ATLAS detector.