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, 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 acceptance range of charged kaons.
Recent measurement of the directed and elliptic flow of charged kaons [5],
has been followed by the extraction of the K-/K+ ratio across phase space,
and was supplemented by the determination of contribution of
Phi meson decays to the K- meson yield at freeze-out.
This new experimental data set may help to sharpen information on the
scale of in-medium modifications of properties of charged kaons via comparisons
to the predictions of the transport models.
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[1] K.Wiśniewski 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).
Primary author
Dr
Krzysztof Piasecki
(University of Warsaw - Faculty of Physics)
