Speaker
Dr
Jean-Yves Ollitrault
(SPhT, Saclay)
Description
Long-range azimuthal correlations are generated by fluctuations of the
initial energy distribution, followed by collective flow.
We list eight independent observables which can be measured using
multiparticle azimuthal correlations in the first three Fourier
harmonics. Some of these observables are already well known, such as
$v_2\{2\}$ and $v_2\{4\}$, but most of them are new, in particular,
the joint correlations between $v_1$, $v_2$ and $v_3$.
We show that by taking ratios of these observables, one can construct
quantities which are largely independent of the hydrodynamic response of the medium, and thus are solely determined by initial fluctuations.
We present predictions for these ratios using a Monte-Carlo
Glauber model and a Monte-Carlo KLN model, and compare to existing
data from STAR and ALICE.
Primary author
Dr
Jean-Yves Ollitrault
(SPhT, Saclay)
Co-authors
Dr
Matthew Luzum
(IPhT Saclay)
Prof.
Rajeev Bhalerao
(TIFR, Mumbai)
