Publication : t00/154
Collective flow and multiparticle azimuthal correlations
Borghini N. (Service de Physique Nucléaire Théorique (PNT), Université Libre de Bruxelles (ULB), C.P 229, B-1050 Bruxelles, BELGIQUE (BELGIUM))Dinh P.M. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Ollitrault J.-Y. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Abstract:Année de publication : 2000
The measurement of azimuthal distributions in nucleus-nucleus collisions relies upon the assumption that azimuthal correlations between particles result solely from their correlation with the reaction plane (i.e. flo). We show that at SPS energies, the ansatz is no longer valid, and two-particle correlations due to momentum conservation, final state interactions or resonance decays become of the same order as those arising from flow. This leads us to introduce new methods to analyse collective flow, based on a cumulant expansion, which enable to extract smaller values than those accessible to the standard analysis.
Chapitre de livre : Proceedings of the XXXth International Symposium on Multiparticle Dynamics. From $e^+e^-$ to Heavy Ion Collisions (ISMD2000)
Editeur : T. Csorgo et al.
Maison d'édition : World Scientific, Singapore, 2001
Pages : 529
Communication : XXXth International Symposium on Multiparticle Dynamics. From e+e- to Heavy Ion Collisions ; Tihany, Hungary ; 2000-10-09 / 2000-10-15
Preprint : arXiv:nucl-th/0011013
Numéro Exterieur : ULB-TH-00/023
Langue : Anglais
Editeurs : Csörgo T., et al.+
Fichier(s) à télécharger :
publi.pdf
