Publication : t20/004
p T -dependent multiplicity fluctuations from PCA and initial conditions
Gardim F.G. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)Grassi F. ()
Ishida P. ()
Luzum M. ()
Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:Année de publication : 2021
We present a Principal Component Analysis for a hydrodynamic simulation and compare with CMS experimental data. While the results are reasonable for anisotropic flow, for multiplicity fluctuations they are qualitatively different. We argue that this is due to too large transverse momentum ( p T ) fluctuations and N− p T covariance in the simulation than seen experimentally. In turn this is related to too large initial size fluctuations.
Revue : Nucl. Phys. A 1005 121892 (2021)
DOI : 10.1016/j.nuclphysa.2020.121892
Preprint : arXiv:2002.01747
Langue : Anglais
Fichier(s) à télécharger :
publi.pdf
