Elucidating the event-shape fluctuations via flow correlations and jet tomography studies in 2.76 TeV Pb+Pb collisions using the ATLAS detector

May 20, 2014, 9:40 AM
20m
europium (darmstadtium)

europium

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Collective Dynamics Collective dynamics

Speaker

Soumya Mohapatra (State University of New York (US))

Description

Measurements of the distributions of event-by-event flow harmonics $v_n$ and the correlations between harmonics $v_n$ and $v_m$ of different orders in $\sqrt{s_{NN}}=2.76$ TeV Pb+Pb collisions are presented. These measurements give insight into the nature of fluctuations in the initial geometry and the role of linear and non-linear hydrodynamic response to the fluctuations, the latter can introduce correlations between flow harmonics. The study of fluctuations is also extended by measurements of the rapidity dependent fluctuations in the v_n. Furthermore, the event-by-event fluctuations in the event shape is elucidated by jet-tomography studies, where the correlations between the $v_n$ of fully reconstructed jets and the $v_m$ of soft particles are measured. The latter directly probes the path-length dependent jet quenching response to the variation of the event-shape controlled by bulk particles.
On behalf of collaboration: ATLAS

Primary author

Soumya Mohapatra (State University of New York (US))

Presentation materials