Publication : t10/101

Phenomenology of the little bang

Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Abstract:
I review recent selected developments in the theory and modeling of ultrarelativistic heavy-ion collisions. I explain why relativistic viscous hydrodynamics is now used to model the expansion of the matter formed in these collisions. I give examples of first quantitative predictions, and I discuss remaining open questions associated with the description of the freeze-out process. I argue that while the expansion process is now well understood, our knowledge of initial conditions is still poor. Recent analyses of two-particle correlations have revealed fine structures known as ridge and shoulder, which extend over a long range in rapidity. These correlations are thought to originate from initial state fluctuations, whose modeling is still crude. I discuss triangular flow, a simple mechanism recently put forward, through which fluctuations generate the observed correlation pattern.
Année de publication : 2011
Revue : J. Phys.: Conf. Ser. 312 012002 (2011)
Conférence - Communication invitée : par Jean-Yves Ollitrault; International Nuclear Physics Conference (INPC 2010) ; Vancouver, Canada ; 2010-07-04 / 2010-07-09
DOI : 10.1088/1742-6596/312/1/012002
Preprint : arXiv:1008.3323
Langue : Anglais

Fichier(s) à télécharger :
  • publi.pdf

  •  

    Retour en haut