TY - JOUR
T1 - Hyperon production in Ar + KCl collisions at 1.76A GeV
AU - HADES Collaboration
AU - Agakishiev, G.
AU - Balanda, A.
AU - Bannier, B.
AU - Bassini, R.
AU - Belver, D.
AU - Belyaev, A.
AU - Blanco, A.
AU - Böhmer, M.
AU - Boyard, J. L.
AU - Cabanelas, P.
AU - Castro, E.
AU - Chernenko, S.
AU - Christ, T.
AU - Destefanis, M.
AU - Díaz, J.
AU - Dohrmann, F.
AU - Dybczak, A.
AU - Eberl, T.
AU - Epple, E.
AU - Fabbietti, L.
AU - Fateev, O.
AU - Finocchiaro, P.
AU - Fonte, P.
AU - Friese, J.
AU - Fröhlich, I.
AU - Galatyuk, T.
AU - Garzón, J. A.
AU - Gernhäuser, R.
AU - Gil, A.
AU - Gilardi, C.
AU - Golubeva, M.
AU - González-Díaz, D.
AU - Guber, F.
AU - Gumberidze, M.
AU - Heilmann, M.
AU - Heinz, T.
AU - Hennino, T.
AU - Holzmann, R.
AU - Huck, P.
AU - Iori, I.
AU - Ivashkin, A.
AU - Jurkovic, M.
AU - Kämpfer, B.
AU - Kanaki, K.
AU - Karavicheva, T.
AU - Kirschner, D.
AU - Koenig, I.
AU - Koenig, W.
AU - Kolb, B. W.
AU - Kotte, R.
N1 - Publisher Copyright:
© The Author(s) 2011.
PY - 2011/2
Y1 - 2011/2
N2 - We present transverse momentum spectra, rapidity distribution and multiplicity of Λ-hyperons measured with the HADES spectrometer in the reaction Ar(1.76A GeV) + KCl. The yield of Ξ− is calcu-lated from our previously reported Ξ− /(Λ+Σ0) ratio and compared to other strange particle multiplicities. Employing a strangeness balance equation the multiplicities of the yet unmeasured Σ±-hyperons can be estimated. Finally a statistical hadronization model is used to fit the yields of π−, K+, K0s, K−, φ, Λ and Ξ−. 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.
AB - We present transverse momentum spectra, rapidity distribution and multiplicity of Λ-hyperons measured with the HADES spectrometer in the reaction Ar(1.76A GeV) + KCl. The yield of Ξ− is calcu-lated from our previously reported Ξ− /(Λ+Σ0) ratio and compared to other strange particle multiplicities. Employing a strangeness balance equation the multiplicities of the yet unmeasured Σ±-hyperons can be estimated. Finally a statistical hadronization model is used to fit the yields of π−, K+, K0s, K−, φ, Λ and Ξ−. 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.
UR - http://www.scopus.com/inward/record.url?scp=85174633936&partnerID=8YFLogxK
U2 - 10.1140/epja/i2011-11021-8
DO - 10.1140/epja/i2011-11021-8
M3 - Article
AN - SCOPUS:85174633936
SN - 1434-6001
VL - 47
JO - European Physical Journal A
JF - European Physical Journal A
IS - 2
M1 - 21
ER -