Transition from in-plane to out-of-plane azimuthal enhancement in Au+Au collisions

A. Andronic, G. Stoicea, M. Petrovici, V. Simion, P. Crochet, J. P. Alard, R. Averbeck, V. Barret, Z. Basrak, N. Bastid, A. Bendarag, G. Berek, R. Čaplar, A. Devismes, P. Dupieux, M. Dželalija, M. Eskef, Ch Finck, Z. Fodor, A. GobbiY. Grishkin, O. N. Hartmann, N. Herrmann, K. D. Hildenbrand, B. Hong, J. Kecskemeti, Y. J. Kim, M. Kirejczyk, M. Korolija, R. Kotte, T. Kress, R. Kutsche, A. Lebedev, K. S. Lee, Y. Leifels, V. Manko, H. Merlitz, W. Neubert, D. Pelte, C. Plettner, F. Rami, W. Reisdorf, B. De Schauenburg, D. Schüll, Z. Seres, B. Sikora, K. S. Sim, K. Siwek-Wilczyńska, V. Smolyankin, M. R. Stockmeier, M. Vasiliev, P. Wagner, K. Wiśniewski, D. Wohlfarth, I. Yushmanov, A. Zhilin

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

The incident energy at which the azimuthal distributions in semicentral heavy-ion collisions change from in-plane to out-of-plane enhancement - Etran is studied as a function of mass of emitted particles, their transverse momentum and centrality for Au+Au collisions. The analysis is performed in a reference frame rotated with the sidewards flow angle (Θflow) relative to the beam axis. A systematic decrease of Etran as function of mass of the reaction products, their transverse momentum and collision centrality is evidenced. The predictions of a microscopic transport model (IQMD) are compared with the experimental results.

Original languageEnglish
Pages (from-to)765-792
Number of pages28
JournalNuclear Physics A
Volume679
Issue number3-4
DOIs
Publication statusPublished - 2001 Jan 1

Bibliographical note

Funding Information:
This work has been supported in part by the German BMBF under contracts RUM-005-95, POL-119-95, UNG-021-96 and RUS-676-98 and by the Deutsche Forschungsge-meinschaft (DFG) under projects 436 RUM-113/10/0, 436 RUS-113/143/2 and 446 KOR-113/76/0. Support has also been received from the Polish State Committee of Scientific Research, KBN, from the Hungarian OTKA under grant T029379, from the Korea Research Foundation under contract No. 1997-001-D00117, from the agreement between GSI and CEA/IN2P3 and from the PROCOPE Program of DAAD.

Keywords

  • 25.70.Pq
  • 25.75.Ld
  • Azimuthal distributions
  • Flow angle
  • NUCLEAR REACTIONS* E=90 - 400 A MeV
  • Nuclear matter Equation of State
  • Quantum molecular dynamics model
  • Semicentral collisions
  • Transition energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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