Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-07-21
Phys.Rev.Lett.102:182501,2009
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 3 figures. References corrected. Minor corrections in text and author list. Figure 3 corrected. Corrections in body a
Scientific paper
10.1103/PhysRevLett.102.182501
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.
Andronic A.
Barret V.
Basrak Z.
Bastid N.
Benabderrahmane M. L.
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