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In-Medium Effects on K0 Mesons in Relativistic Heavy-Ion Collisions

G. Agakishiev A. Balanda B. Bannier R. Bassini D. Belver A. V. Belyaev A. Blanco M. Böhmer J. L. Boyard 1 P. Cabanelas E. Castro S. Chernenko T. Christ M. Destefanis J. Diaz F. Dohrmann A. Dybczak T. Eberl E. Epple L. Fabbietti O. V. Fateev P. Finocchiaro P. Fonte J. Friese I. Fröhlich T. Galatyuk J. A. Garzón R. Gernhäuser A. Gil C. Gilardi M. Golubeva D. González-Díaz F. Guber M. Heilmann T. Heinz T. Hennino 1 R. Holzmann A. Ierusalimov I. Iori A. Ivashkin M. Jurkovic B. Kämpfer K. Kanaki T. Karavicheva D. Kirschner I. Koenig W. Koenig B. W. Kolb R. Kotte F. Krizek R. Krücken W. Kühn A. Kugler A. Kurepin S. Lang J. S. Lange K. Lapidus T. Liu 1 L. Lopes M. Lorenz L. Maier A. Mangiarotti J. Markert V. Metag B. Michalska J. Michel D. Mishra E. Morinière 1 J. Mousa C. Müntz L. Naumann J. Otwinowski Y. C. Pachmayer M. Palka Y. Parpottas V. Pechenov O. Pechenova T. Pérezcavalcanti J. Pietraszko W. Przygoda B. Ramstein 1 A. Reshetin M. Roy-Stephan 1 A. Rustamov A. Sadovsky B. Sailer P. Salabura A. Schmah E. Schwab Yu. G. Sobolev S. Spataro B. Spruck H. Ströbele J. Stroth C. Sturm M. Sudol 1 A. Tarantola K. Teilab P. Tlusty M. Traxler R. Trebac H. Tsertos V. Wagner M. Weber M. Wisniowski T. Wojcik J. Wüstenfel S. Yurevich Y. V. Zanevsky P. Zhou P. Zumbruch
1 IPNO - Institut de Physique Nucléaire d'Orsay
Abstract : We present the transverse momentum spectra and rapidity distributions of $\pi^{-}$ and K$^0_S$ in Ar+KCl reactions at a beam kinetic energy of 1.756 A GeV measured with the spectrometer HADES. The reconstructed K$^0_S$ sample is characterized by good event statistics for a wide range in momentum and rapidity. We compare the experimental $\pi^{-}$ and K$^0_S$ distributions to predictions by the IQMD model. The model calculations show that K$^0_S$ at low tranverse momenta constitute a particularly well suited tool to investigate the kaon in-medium potential. Our K$^0_S$ data suggest a strong repulsive in-medium K$^0$ potential of about 40 MeV strength.
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http://hal.in2p3.fr/in2p3-00555440
Contributor : Sophie Heurteau <>
Submitted on : Thursday, January 13, 2011 - 1:58:54 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:19 PM

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G. Agakishiev, A. Balanda, B. Bannier, R. Bassini, D. Belver, et al.. In-Medium Effects on K0 Mesons in Relativistic Heavy-Ion Collisions. Physical Review C, American Physical Society, 2010, 82, pp.044907. ⟨10.1103/PhysRevC.82.044907⟩. ⟨in2p3-00555440⟩

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