# Nuclear medium modifications of properties of kaons measured around threshold with FOPI

Source: [Nuclear medium modifications of properties of kaons measured around threshold with FOPI](<https://www.sota2.com/research/paper/68fa36b51e209131ce8ac5bf>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T21:59:11.502Z

Authors: K. Piasecki

Published: 2017-11-13T11:09:36.000Z

## Abstract

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 $v\_1$ 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.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1711.04525>)

[PDF](<https://arxiv.org/pdf/1711.04525.pdf>)