Publication : t03/050
Directed and elliptic flow of charged pions and protons in Pb+Pb collisions at 40 and 158$A$ GeV
Alt C. (Fachbereich Physik der Universität, Frankfurt, GERMANY)Borghini N. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
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)
et al.+ ()
Abstract:Année de publication : 2003
Directed and elliptic flow measurements for charged pions and protons are reported as a function of transverse momentum, rapidity, and centrality for 40 and 158 $A\cdot$GeV Pb + Pb collisions as recorded by the NA49 detector. Both the standard method of correlating particles with an event plane, and the cumulant method of studying multiparticle correlations are used. In the standard method the directed flow is corrected for conservation of momentum. In the cumulant method elliptic flow is reconstructed from genuine 4, 6, and 8-particle correlations, showing the first unequivocal evidence for collective motion in A+A collisions at SPS energies.
Revue : Phys. Rev. C 68 034903 (2003)
DOI : 10.1103/PhysRevC.68.034903
Preprint : arXiv:nucl-ex/0303001
Lien : http://link.aps.org/abstract/PRC/v68/p034903
PACS : 25.75.Ld
Langue : Anglais
NB : [32 pp.]
Fichier(s) à télécharger :
publi.pdf
