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Phys. Rev. C 72, 011901(R) (2005) [5 pages]

First analysis of anisotropic flow with Lee–Yang zeros

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N. Bastid et al. FOPI Collaboration
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Received 4 April 2005; published 19 July 2005

We report on the first analysis of directed and elliptic flow with the new method of Lee–Yang zeros. Experimental data are presented for Ru+Ru reactions at 1.69A GeV measured with the FOPI detector at SIS/GSI. The results obtained with several methods, based on the event-plane reconstruction, on Lee–Yang zeros, and on multiparticle cumulants (up to fifth 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.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.72.011901
DOI:
10.1103/PhysRevC.72.011901
PACS:
25.75.Ld, 25.70.-z