4–6 Nov 2016
Institute of Physics, Jan Kochanowski University
Europe/Warsaw timezone

In-medium modifications of properties of near-theshold kaons in wide range of phase space with FOPI

4 Nov 2016, 16:05
20m
Institute of Physics, Jan Kochanowski University

Institute of Physics, Jan Kochanowski University

Świętokrzyska 15, Kielce, Poland

Speaker

Dr Krzysztof Piasecki (University of Warsaw, Faculty of Physics)

Description

Modifications of basic properties of kaons, like mass and decay constants, in hot and dense nuclear medium, often parameterized by the in-medium potentials,
are an intensely studied topic in the last two decades. However, until recently the experimental samples obtained from the heavy-ion collisions at 1-2A GeV, and used to draw conclusions on the scale of these potentials were limited to narrow windows of the momentum space [1-4].

An installation of the new RPC-based ToF detector within the FOPI setup at GSI allowed for a considerable enhancement of the kaon acceptance range. Recent measurement of the directed and elliptic flow of charged kaons [5], has been followed by the investigation of the K-/K+ ratio across phase space, and was supplemented by the measurement of the Phi mesons, a relevant source of about 20% of negatively charged kaons. This new information may help to sharpen the deduced values of the potentials of interaction of kaons with the medium.


[1] K.Wisniewski et al., Eur. Phys. J. A 9, 515 (2000).

[2] F.Laue et al., Eur. Phys. J. A 9, 397 (2000).

[3] W.Scheinast et al., Phys. Rev. Lett. 96, 072301 (2006).

[4] P.Gasik et al., Eur. Phys. J. A 52, 177 (2016).

[5] V.Zinyuk et al., Phys. Rev. C 90, 025210 (2014).

Author

Dr Krzysztof Piasecki (University of Warsaw, Faculty of Physics)

Presentation materials