We report on the investigation of modifications of basic properties of K+ and K− mesons emitted from collisions of Ni+Ni at beam energy of 1.91A GeV. Experimental K−/K+ ratio are presented in a wide range of phase space parameterized by kinetic energy and emission angle in the nucleon-nucleon centre of mass. The v1 component of the azimuthal distribution was extracted as a function of rapidity and transverse momentum for central, and semi-peripheral collisions. A comparison of these patterns with the HSD transport model favours the existence of the kaon-nucleon in-medium potential. For the IQMD model, this interaction scenario is confirmed in case of K−, whereas for K+ the picture is less clear.
@article{arxiv.1711.04525,
title = {Nuclear medium modifications of properties of kaons measured around threshold with FOPI},
author = {K. Piasecki},
journal= {arXiv preprint arXiv:1711.04525},
year = {2017}
}
Comments
7 pages, 3 figures, proceedings article of the 55th International Winter Meeting on Nuclear Physics, Bormio (Italy) 2017