Measurement of the in-medium K0 inclusive cross section in π - IInduced reactions at 1.15GeV/c

M. L. Benabderrahmane, N. Herrmann, K. Wiśniewski, J. Kecskemeti, A. Andronic, V. Barret, Z. Basrak, N. Bastid, P. Buehler, M. Cargnelli, R. Čaplar, E. Cordier, I. Deppner, P. Crochet, P. Dupieux, M. Dželalija, L. Fabbietti, Z. Fodor, P. Gasik, I. GašparićY. Grishkin, O. N. Hartmann, K. D. Hildenbrand, B. Hong, T. I. Kang, P. Kienle, M. Kirejczyk, Y. J. Kim, M. Kiš, P. Koczoń, M. Korolija, R. Kotte, A. Lebedev, Y. Leifels, X. Lopez, V. Manko, J. Marton, A. Mangiarotti, M. Merschmeyer, T. Matulewicz, M. Petrovici, K. Piasecki, F. Rami, A. Reischl, W. Reisdorf, M. Rogowska, M. S. Ryu, P. Schmidt, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, K. Suzuki, Z. Tymiński, E. Widmann, Z. G. Xiao, T. Yamazaki, I. Yushmanov, X. Y. Zhang, A. Zhilin, J. Zmeskal, E. Bratkovskaya, W. Cassing

Research output: Contribution to journalArticlepeer-review


The K0 meson production by π- mesons of 1.15GeV/c momentum on C, Al, Cu, Sn, and Pb nuclear targets was measured with the FOPI spectrometer at the Schwer-Ionen-Synchrotron accelerator of GSI. Inclusive production cross sections and the momentum distributions of K0 mesons are compared to scaled elementary production cross sections and to predictions of theoretical models describing the in-medium production of kaons. The data represent a new reference for those models, which are widely used for interpretation of the strangeness production in heavy-ion collisions. The presented results demonstrate the sensitivity of the kaon production to the reaction amplitudes inside nuclei and point to the existence of a repulsive KN potential of 20±5MeV at normal nuclear matter density.

Original languageEnglish (US)
Article number182501
JournalPhysical Review Letters
Issue number18
StatePublished - May 4 2009

ASJC Scopus subject areas

  • General Physics and Astronomy


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