Publication : t05/043

First analysis of anisotropic flow with Lee-Yang zeroes
Bastid N. (Laboratoire de Physique Corpusculaire Clermont-Ferrand, Campus des Cézeaux, Bât. 6,7,8 Physique, 24, avenue des Landais, 63177 Aubière, FRANCE)
et al.+ ((FOPI collaboration))
Ollitrault J.-Y. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Borghini N. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)

Abstract:
We report on the first analysis of directed and elliptic flow with the new method of Lee--Yang zeroes. Experimental data are presented for Ru+Ru reactions at 1.69$A$~GeV measured with the FOPI detector at SIS/GSI. The results obtained with several methods, based on the event-plane reconstruction, on Lee--Yang zeroes, and on multi-particle cumulants (up to 5th order) applied for the first time at SIS energies, are compared. They show conclusive evidence that azimuthal correlations between nucleons and composite particles at this energy are largely dominated by anisotropic flow.

Année de publication : 2005
Revue : Phys. Rev. C 72 011901(R) (2005)
DOI : 10.1103/PhysRevC.72.011901
Preprint : arXiv:nucl-ex/0504002
Lien : http://link.aps.org/abstract/PRC/v72/p011901(R)
Langue : Anglais
NB : 72, 011901(R) (2005) [5 pp.] [Rapid Commun.]

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