München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 58: Heavy-Ion Collisions and QCD Phases X

HK 58.3: Talk

Friday, March 22, 2019, 14:45–15:00, HS 15

Higher order Symmetric Cumulants — •Cindy Mordasini — Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany

The measurements of correlations between the fluctuations of amplitudes of different flow harmonics in heavy-ion collisions have been shown to have a better sensitivity to the properties of the Quark-Gluon Plasma than the flow harmonics computed individually. These results were obtained using a new method based on the computation of the multiparticle cumulants for two different harmonics: the Symmetric Cumulants.

This talk presents the generalization of the Symmetric Cumulants for the case of three or more different harmonics. It will be shown explicitly how this new observable is sensitive only to the genuine three-harmonic correlations, and therefore how it provides a new and independent constraint on the properties of the Quark-Gluon Plasma. Predictions of these new observables made with the iEBE-VISHNU model will be shown.