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Measurement of K*^(892)^0 and K^0 mesons in Al+Al collisions at 1.9 A GeV

Abstract : New measurement of sub-threshold $K^*(892)^0$ and $K^0$ production is presented. The experimental data complete the measurement of strange particles produced in Al+Al collisions at 1.9$A$ GeV measured with the FOPI detector at SIS/GSI. The $K^*(892)^0$ / $K^0$ yield ratio is found to be $0.0315\pm 0.006 (\mathrm{stat.})\pm 0.012 (\mathrm{syst.})$ and is in good agreement with the UrQMD model prediction. These measurements provide information on in-medium cross section of $K^+$ - $\pi^-$ fusion which is the dominant process on sub-threshold $K^*(892)^0$ production.
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http://hal.in2p3.fr/in2p3-00560247
Contributor : Jeanine Pellet <>
Submitted on : Thursday, January 27, 2011 - 5:19:02 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:12 PM

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X. Lopez, N. Herrmann, K. Piasecki, A. Andronic, V. Barret, et al.. Measurement of K*^(892)^0 and K^0 mesons in Al+Al collisions at 1.9 A GeV. Physical Review C, American Physical Society, 2010, 81, pp.061902. ⟨10.1103/PhysRevC.81.061902⟩. ⟨in2p3-00560247⟩

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