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arXiv · 0807.3361

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

M. L. Benabderrahmane·N. Herrmann·K. Wisniewski·J. Kecskemeti·A. Andronic·V. Barret·Z. Basrak·N. Bastid·P. Buehler·M. Cargnelli·R. Caplar·E. Cordier·I. Deppner·P. Crochet·P. Dupieux·M. Dzelalija·L. Fabbietti·Z. Fodor·P. Gasik·I. Gasparic·Y. Grishkin·O. N. Hartmann·K. D. Hildenbrand·B. Hong·T. I. Kang·P. Kienle·M. Kirejczyk·Y. J. Kim·M. Kis·P. Koczon·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. S. Ryu·P. Schmidt·A. Schuttauf·Z. Seres·B. Sikora·K. S. Sim·V. Simion·K. Siwek-Wilczynska·V. Smolyankin·K. Suzuki·Z. Tyminski·E. Widmann·Z. G. Xiao·T. Yamazaki·I. Yushmanov·X. Y. Zhang·A. Zhilin·J. Zmeskal·E. Bratkovskaya·W. Cassing
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Abstract

The K0 meson production by pi- mesons of 1.15 GeV/c momentum on C, Al, Cu, Sn and Pb nuclear targets was measured with the FOPI spectrometer at the SIS 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+-5 MeV at normal nuclear matter density.

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M. L. Benabderrahmane, N. Herrmann, K. Wisniewski, J. Kecskemeti, A. Andronic, V. Barret, Z. Basrak, N. Bastid, P. Buehler, M. Cargnelli, R. Caplar, E. Cordier, I. Deppner, P. Crochet, P. Dupieux, M. Dzelalija, L. Fabbietti, Z. Fodor, P. Gasik, I. Gasparic, Y. Grishkin, O. N. Hartmann, K. D. Hildenbrand, B. Hong, T. I. Kang, P. Kienle, M. Kirejczyk, Y. J. Kim, M. Kis, P. Koczon, 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. S. Ryu, P. Schmidt, A. Schuttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczynska, V. Smolyankin, K. Suzuki, Z. Tyminski, E. Widmann, Z. G. Xiao, T. Yamazaki, I. Yushmanov, X. Y. Zhang, A. Zhilin, J. Zmeskal, E. Bratkovskaya, W. Cassing. 2009-03-20. Measurement of the in-medium K0 inclusive cross section in pi- -induced reactions at 1.15 GeV/c. https://doi.org/10.1103/physrevlett.102.182501

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