Publication : t14/233
Characterizing flow fluctuations with moments
Bhalerao R.S. (Dpt Theoretical Physics, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Mumbai 400 005, INDIA)Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Pal S. (Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Mumbai 400 005 INDIA)
Abstract:Année de publication : 2015
We present a complete set of multiparticle correlation observables for ultrarelativistic heavy-ion collisions. These include moments of the distribution of the anisotropic flow in a single harmonic, and also mixed moments, which contain the information on correlations between event planes of different harmonics. We explain how all these moments can be measured using just two symmetric subevents separated by a rapidity gap. This presents a multi-pronged probe of the physics of flow fluctuations. For instance, it allows to test the hypothesis that event-plane correlations are generated by non-linear hydrodynamic response. We illustrate the method with simulations of events in A MultiPhase Transport (AMPT) model.
Revue : Phys. Lett. B 742 94-98 (2015)
DOI : 10.1016/j.physletb.2015.01.019
Preprint : arXiv:1411.5160
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
