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Hyperon production in Ar plus KCl collisions at 1.76A GeV
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SYSNO ASEP 0366259 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Hyperon production in Ar plus KCl collisions at 1.76A GeV Author(s) Agakishiev, G. (RU)
Balanda, A. (PL)
Bannier, B. (DE)
Belver, D. (ES)
Křížek, Filip (UJF-V) RID, ORCID, SAI
Kugler, Andrej (UJF-V) RID, ORCID, SAI
Sobolev, Yuri, G. (UJF-V) ORCID
Tlustý, Pavel (UJF-V) ORCID, SAI
Wagner, Vladimír (UJF-V) RID, ORCID, SAINumber of authors 113 Source Title European Physical Journal A. - : Springer - ISSN 1434-6001
Roč. 47, č. 2 (2011), 21/1-21/8Number of pages 9 s. Language eng - English Country DE - Germany Keywords HEAVY-ION COLLISIONS ; NUCLEUS-NUCLEUS COLLISIONS ; KAON PRODUCTION Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects IAA100480803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC07050 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000288551700007 DOI 10.1140/epja/i2011-11021-8 Annotation We present transverse momentum spectra, rapidity distribution and multiplicity of Lambda-hyperons measured with the HADES spectrometer in the reaction Ar(1.76A GeV) + KCl. The yield of Xi(-) is calculated from our previously reported Xi(-)/(Lambda+Sigma(0)) ratio and compared to other strange particle multiplicities. Employing a strangeness balance equation the multiplicities of the yet unmeasured Sigma(+/-)-hyperons can be estimated. Finally a statistical hadronization model is used to fit the yields of pi(-), K(+), K(s)(0), K(-), phi, Lambda and Xi(-). 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. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2012
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