Sideward flow of K+ mesons in Ru + Ru and Ni + Ni reactions near threshold

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

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104 Citations (Scopus)


Experimental data on K+ meson and proton sideward flow measured with the FOPI detector at SIS/GSI in the reactions Ru + Ru at 1.69A GeV and Ni + Ni at 1.93 A GeV are presented. The K+ sideward flow is found to be anti-correlated (correlated) with the one of protons at low (high) transverse momenta. When compared to the predictions of a transport model, the data favour the existence of an in-medium repulsive K+-nucleon potential. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)6-12
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 2000 Jul 27

Bibliographical note

Funding Information:
We gratefully acknowledge E.L. Bratkovskaya and W. Cassing for providing us the RBUU calculations and for fruitful discussions. This work was supported by the agreement between GSI and IN2P3/CEA and by the PROCOPE-Program of the DAAD. The BMBF supplied support under the contracts RUM-005-95, POL-119-95, UNG-021-96 and RUS-676-98, the DFG within the projects 436 RUS-113/143/2 and 446 KOR-113/76/0. Support has been received from the Polish KBN under grant 2P302-011-04, from the Korean KOSEF under grant 985-0200-004-2, from the Hungarian OMFB under contract D-86/96 and from the Hungarian OTKA under grant T029379.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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