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Hyperon production in Ar + KCl collisions at 1.76A GeV

Abstract : We present transverse momentum spectra, rapidity distribution and multiplicity of -hyperons measured with the HADES spectrometer in the reaction Ar(1.76AGeV) + KCl . The yield of is calculated from our previously reported /( + ) ratio and compared to other strange particle multiplicities. Employing a strangeness balance equation the multiplicities of the yet unmeasured -hyperons can be estimated. Finally a statistical hadronization model is used to fit the yields of , K+, K 0 s , K-, , and . The resulting chemical freeze-out temperature of T = (76±2) MeV is compared to the measured slope parameters obtained from fits to the transverse mass distributions of the different particles.
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http://hal.in2p3.fr/in2p3-00582919
Contributor : Sophie Heurteau <>
Submitted on : Monday, April 4, 2011 - 2:14:21 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:31 PM

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G. Agakishiev, A. Balanda, B. Bannier, R. Bassini, D. Belver, et al.. Hyperon production in Ar + KCl collisions at 1.76A GeV. European Physical Journal A, EDP Sciences, 2011, 47, pp.21. ⟨10.1140/epja/i2011-11021-8⟩. ⟨in2p3-00582919⟩

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