Phys. Rev. C
72,
011901(R)
(2005)
[5 pages]
First analysis of anisotropic flow with Lee–Yang zeros
N. Bastid et al. FOPI Collaboration
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N. Bastid1,*, A. Andronic2, V. Barret1, Z. Basrak3, M. L. Benabderrahmane4, R. Čaplar3, E. Cordier4, P. Crochet1, P. Dupieux1, M. Dželalija3, Z. Fodor5, I. Gašparić3, A. Gobbi2, Y. Grishkin6, O. N. Hartmann2, N. Herrmann4, K. D. Hildenbrand2, B. Hong7, J. Kecskemeti5, Y. J. Kim7,2, M. Kirejczyk2,8, P. Koczon2, M. Korolija3, R. Kotte9, T. Kress2, A. Lebedev6, Y. Leifels2, X. Lopez1, A. Mangiarotti4, V. Manko10, M. Merschmeyer4, D. Moisa11, W. Neubert9, D. Pelte4, M. Petrovici11, F. Rami12, W. Reisdorf2, A. Schuettauf2, Z. Seres5, B. Sikora8, K. S. Sim7, V. Simion11, K. Siwek-Wilczyńska8, M. M. Smolarkiewicz8, V. Smolyankin6, I. J. Soliwoda8, M. R. Stockmeier4, G. Stoicea11, Z. Tyminski2,8, K. Wiśniewski8, D. Wohlfarth9, Z. Xiao2, I. Yushmanov10, and A. Zhilin6 (FOPI Collaboration)
1Laboratoire de Physique Corpusculaire, IN2P3/CNRS and Université Blaise Pascal, Clermont-Ferrand, France 2Gesellschaft für Schwerionenforschung, Darmstadt, Germany 3Rudjer Boskovic Institute, Zagreb, Croatia 4Physikalisches Institut der Universität Heidelberg, Heidelberg, Germany 5KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary 6Institute for Theoretical and Experimental Physics, Moscow, Russia 7Korea University, Seoul, South Korea 8Institute of Experimental Physics, Warsaw University, Warsaw, Poland 9IKH, Forschungszentrum Rossendorf, Dresden, Germany 10Russian Research Center “Kurchatov Institute,” Moscow, Russia 11National Institute for Physics and Nuclear Engineering, Bucharest, Romania 12Institut de Recherches Subatomiques, IN2P3-CNRS and Université Louis Pasteur, Strasbourg, France
J.-Y. Ollitrault and N. Borghini
Service de Physique Théorique, CEA-Saclay, Gif-sur-Yvette, France
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
*Electronic address: nicole.bastid@clermont.in2p3.fr †Now at Physics Department, Theory Division, CERN, Geneva, Switzerland.
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