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Hyperon production in Ar + KCl collisions at 1.76A GeV

  • The HADES Collaboration
  • G. Agakishiev
  • A. Balanda
  • B. Bannier
  • R. Bassini
  • D. Belver
  • A. Belyaev
  • A. Blanco
  • M. Böhmer
  • J. L. Boyard
  • P. Cabanelas
  • E. Castro
  • S. Chernenko
  • T. Christ
  • M. Destefanis
  • J. Dıaz
  • F. Dohrmann
  • A. Dybczak
  • T. Eberl
  • E. Epple
  • L. Fabbietti
  • O. Fateev
  • P. Finocchiaro
  • P. Fonte
  • J. Friese
  • I. Fröhlich
  • T. Galatyuk
  • J. A. Garzón
  • R. Gernhäuser
  • A. Gil
  • C. Gilardi
  • M. Golubeva
  • D. González-Dıaz
  • F. Guber
  • M. Gumberidze
  • M. Heilmann
  • T. Heinz
  • T. Hennino
  • R. Holzmann
  • P. Huck
  • 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
  • L. Lopes
  • M. LorenzEmail author
  • L. Maier
  • A. Mangiarotti
  • J. Markert
  • V. Metag
  • B. Michalska
  • J. Michel
  • D. Mishra
  • E. Morinière
  • J. Mousa
  • C. Müntz
  • L. Naumann
  • J. Otwinowski
  • Y. C. Pachmayer
  • M. Palka
  • Y. Parpottas
  • V. Pechenov
  • O. Pechenova
  • T. Pérez Cavalcanti
  • J. Pietraszko
  • W. Przygoda
  • B. Ramstein
  • A. Reshetin
  • M. Roy-Stephan
  • A. Rustamov
  • A. Sadovsky
  • B. Sailer
  • P. Salabura
  • A. Schmah
  • E. Schwab
  • J. Siebenson
  • Yu. G. Sobolev
  • S. Spataro
  • B. Spruck
  • H. Ströbele
  • J. Stroth
  • C. Sturm
  • A. Tarantola
  • K. Teilab
  • P. Tlusty
  • M. Traxler
  • R. Trebacz
  • H. Tsertos
  • V. Wagner
  • M. Weber
  • C. Wendisch
  • M. Wisniowski
  • T. Wojcik
  • J. Wüstenfeld
  • S. Yurevich
  • Y. Zanevsky
  • P. Zhou
  • P. Zumbruch
Open Access
Regular Article - Experimental Physics

Abstract.

We present transverse momentum spectra, rapidity distribution and multiplicity of \( \Lambda\) -hyperons measured with the HADES spectrometer in the reaction Ar(1.76AGeV) + 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 \( \Sigma^{{\pm}}_{}\) -hyperons can be estimated. Finally a statistical hadronization model is used to fit the yields of \( \pi^{-}_{}\) , K+, K 0 s , 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.

Keywords

Transverse Mass Hyperon Production Transverse Mass Distribution Statistical Hadronization Model Transverse Mass Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Author(s) 2011

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • The HADES Collaboration
  • G. Agakishiev
    • 6
  • A. Balanda
    • 3
  • B. Bannier
    • 5
  • R. Bassini
    • 9
  • D. Belver
    • 16
  • A. Belyaev
    • 6
  • A. Blanco
    • 2
  • M. Böhmer
    • 12
  • J. L. Boyard
    • 14
  • P. Cabanelas
    • 16
  • E. Castro
    • 16
  • S. Chernenko
    • 6
  • T. Christ
    • 12
  • M. Destefanis
    • 8
  • J. Dıaz
    • 17
  • F. Dohrmann
    • 5
  • A. Dybczak
    • 3
  • T. Eberl
    • 12
  • E. Epple
    • 11
  • L. Fabbietti
    • 11
  • O. Fateev
    • 6
  • P. Finocchiaro
    • 1
  • P. Fonte
    • 2
  • J. Friese
    • 12
  • I. Fröhlich
    • 7
  • T. Galatyuk
    • 7
  • J. A. Garzón
    • 16
  • R. Gernhäuser
    • 12
  • A. Gil
    • 17
  • C. Gilardi
    • 8
  • M. Golubeva
    • 10
  • D. González-Dıaz
    • 4
  • F. Guber
    • 10
  • M. Gumberidze
    • 14
  • M. Heilmann
    • 7
  • T. Heinz
    • 4
  • T. Hennino
    • 14
  • R. Holzmann
    • 4
  • P. Huck
    • 12
  • I. Iori
    • 9
  • A. Ivashkin
    • 10
  • M. Jurkovic
    • 12
  • B. Kämpfer
    • 5
  • K. Kanaki
    • 5
  • T. Karavicheva
    • 10
  • D. Kirschner
    • 8
  • I. Koenig
    • 4
  • W. Koenig
    • 4
  • B. W. Kolb
    • 4
  • R. Kotte
    • 5
  • F. Krizek
    • 15
  • R. Krücken
    • 12
  • W. Kühn
    • 8
  • A. Kugler
    • 15
  • A. Kurepin
    • 10
  • S. Lang
    • 4
  • J. S. Lange
    • 8
  • K. Lapidus
    • 11
  • T. Liu
    • 14
  • L. Lopes
    • 2
  • M. Lorenz
    • 7
    Email author
  • L. Maier
    • 12
  • A. Mangiarotti
    • 2
  • J. Markert
    • 7
  • V. Metag
    • 8
  • B. Michalska
    • 3
  • J. Michel
    • 7
  • D. Mishra
    • 8
  • E. Morinière
    • 14
  • J. Mousa
    • 13
  • C. Müntz
    • 7
  • L. Naumann
    • 5
  • J. Otwinowski
    • 3
  • Y. C. Pachmayer
    • 7
  • M. Palka
    • 7
  • Y. Parpottas
    • 13
  • V. Pechenov
    • 4
  • O. Pechenova
    • 7
  • T. Pérez Cavalcanti
    • 8
  • J. Pietraszko
    • 7
  • W. Przygoda
    • 3
  • B. Ramstein
    • 14
  • A. Reshetin
    • 10
  • M. Roy-Stephan
    • 14
  • A. Rustamov
    • 4
  • A. Sadovsky
    • 10
  • B. Sailer
    • 12
  • P. Salabura
    • 3
  • A. Schmah
    • 4
  • E. Schwab
    • 4
  • J. Siebenson
    • 11
  • Yu. G. Sobolev
    • 15
  • S. Spataro
    • 8
  • B. Spruck
    • 8
  • H. Ströbele
    • 7
  • J. Stroth
    • 7
    • 4
  • C. Sturm
    • 4
  • A. Tarantola
    • 7
  • K. Teilab
    • 7
  • P. Tlusty
    • 15
  • M. Traxler
    • 4
  • R. Trebacz
    • 3
  • H. Tsertos
    • 13
  • V. Wagner
    • 15
  • M. Weber
    • 12
  • C. Wendisch
    • 5
  • M. Wisniowski
    • 3
  • T. Wojcik
    • 3
  • J. Wüstenfeld
    • 5
  • S. Yurevich
    • 4
  • Y. Zanevsky
    • 6
  • P. Zhou
    • 5
  • P. Zumbruch
    • 4
  1. 1.Laboratori Nazionali del SudIstituto Nazionale di Fisica NucleareCataniaItaly
  2. 2.LIP-Laboratório de Instrumentação e Fısica Experimental de PartıculasCoimbraPortugal
  3. 3.Smoluchowski Institute of PhysicsJagiellonian University of CracowKrakówPoland
  4. 4.GSI Helmholtzzentrum für Schwerionenforschung GmbHDarmstadtGermany
  5. 5.Forschungszentrum Dresden-RossendorfInstitut für StrahlenphysikDresdenGermany
  6. 6.Joint Institute of Nuclear ResearchDubnaRussia
  7. 7.Institut für KernphysikGoethe-UniversitätFrankfurtGermany
  8. 8.II.Physikalisches InstitutJustus Liebig Universität GiessenGiessenGermany
  9. 9.Istituto Nazionale di Fisica Nucleare, Sezione di MilanoMilanoItaly
  10. 10.Institute for Nuclear ResearchRussian Academy of ScienceMoscowRussia
  11. 11.Excellence Cluster “Origin and Structure of the Universe”MunichGermany
  12. 12.Physik Department E12Technische Universität MünchenMünchenGermany
  13. 13.Department of PhysicsUniversity of CyprusNicosiaCyprus
  14. 14.Institut de Physique Nucléaire (UMR 8608), CNRS/IN2P3Université Paris SudOrsay CedexFrance
  15. 15.Nuclear Physics InstituteAcademy of Sciences of Czech RepublicRezCzech Republic
  16. 16.Departamento de Fısica de PartıculasUniversidad de Santiago de CompostelaSantiago de CompostelaSpain
  17. 17.Instituto de Fısica CorpuscularUniversidad de Valencia-CSICValenciaSpain

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