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pp and ππ intensity interferometry in collisions of Ar+KCl at 1.76A GeV

  • The HADES Collaboration
  • G. Agakishiev
  • A. Balanda
  • B. Bannier
  • R. Bassini
  • D. Belver
  • A. V. 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. V. 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. KotteEmail author
  • F. Krizek
  • R. Krücken
  • W. Kühn
  • A. Kugler
  • A. Kurepin
  • S. Lang
  • J. S. Lange
  • K. Lapidus
  • T. Liu
  • L. Lopes
  • M. Lorenz
  • 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. V. Zanevsky
  • P. Zhou
  • P. Zumbruch
Open Access
Regular Article - Experimental Physics

Abstract

Results on pp, π+π+, and ππ intensity interferometry are reported for collisions of Ar+KCl at 1.76A GeV beam energy, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18/GSI. The experimental correlation functions as a function of the relative momentum are compared to model calculations allowing the determination of the space-time extent of the corresponding emission sources. The ππ source radii are found significantly larger than the pp emission radius. The present radii do well complement the beam-energy dependences of Gaussian source radii of the collision system of size A + A ≃ 40 + 40 . The pp source radius at fixed beam energy is found to increase linearly with the cube root of the number of participants. From this trend, a lower limit of the pp correlation radius is deduced.

Keywords

Impact Parameter Collision System Source Radius Track Candidate HADES Collaboration 
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

© SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • The HADES Collaboration
  • G. Agakishiev
    • 8
  • A. Balanda
    • 3
  • B. Bannier
    • 5
  • R. Bassini
    • 9
  • D. Belver
    • 15
  • A. V. Belyaev
    • 6
  • A. Blanco
    • 2
  • M. Böhmer
    • 11
  • J. L. Boyard
    • 13
  • P. Cabanelas
    • 15
  • E. Castro
    • 15
  • S. Chernenko
    • 6
  • T. Christ
    • 11
  • M. Destefanis
    • 8
  • J. Dıaz
    • 16
  • F. Dohrmann
    • 5
  • A. Dybczak
    • 3
  • T. Eberl
    • 11
  • E. Epple
    • 11
  • L. Fabbietti
    • 11
    • 17
  • O. V. Fateev
    • 6
  • P. Finocchiaro
    • 1
  • P. Fonte
    • 2
    • 18
  • J. Friese
    • 11
  • I. Fröhlich
    • 7
  • T. Galatyuk
    • 7
  • J. A. Garzón
    • 15
  • R. Gernhäuser
    • 11
  • A. Gil
    • 16
  • C. Gilardi
    • 8
  • M. Golubeva
    • 10
  • D. González-Dıaz
    • 4
  • F. Guber
    • 10
  • M. Gumberidze
    • 13
  • M. Heilmann
    • 7
  • T. Heinz
    • 4
  • T. Hennino
    • 13
  • R. Holzmann
    • 4
  • P. Huck
    • 11
  • I. Iori
    • 9
    • 19
  • A. Ivashkin
    • 10
  • M. Jurkovic
    • 11
  • B. Kämpfer
    • 5
    • 20
  • K. Kanaki
    • 5
  • T. Karavicheva
    • 10
  • D. Kirschner
    • 8
  • I. Koenig
    • 4
  • W. Koenig
    • 4
  • B. W. Kolb
    • 4
  • R. Kotte
    • 5
    Email author
  • F. Krizek
    • 14
  • R. Krücken
    • 11
  • W. Kühn
    • 8
  • A. Kugler
    • 14
  • A. Kurepin
    • 10
  • S. Lang
    • 4
  • J. S. Lange
    • 8
  • K. Lapidus
    • 10
    • 17
  • T. Liu
    • 13
  • L. Lopes
    • 2
  • M. Lorenz
    • 7
  • L. Maier
    • 11
  • A. Mangiarotti
    • 2
  • J. Markert
    • 7
  • V. Metag
    • 8
  • B. Michalska
    • 3
  • J. Michel
    • 7
  • D. Mishra
    • 8
  • E. Morinière
    • 13
  • J. Mousa
    • 12
  • C. Müntz
    • 7
  • L. Naumann
    • 5
  • J. Otwinowski
    • 3
  • Y. C. Pachmayer
    • 7
  • M. Palka
    • 4
  • Y. Parpottas
    • 12
  • V. Pechenov
    • 4
  • O. Pechenova
    • 8
  • T. Pérez Cavalcanti
    • 8
  • J. Pietraszko
    • 4
  • W. Przygoda
    • 3
  • B. Ramstein
    • 13
  • A. Reshetin
    • 10
  • M. Roy-Stephan
    • 13
  • A. Rustamov
    • 4
  • A. Sadovsky
    • 10
  • B. Sailer
    • 11
  • P. Salabura
    • 3
  • A. Schmah
    • 11
    • 21
  • E. Schwab
    • 4
  • J. Siebenson
    • 11
  • Yu. G. Sobolev
    • 14
  • S. Spataro
    • 8
    • 22
  • B. Spruck
    • 8
  • H. Ströbele
    • 7
  • J. Stroth
    • 7
    • 4
  • C. Sturm
    • 4
  • A. Tarantola
    • 7
  • K. Teilab
    • 7
  • P. Tlusty
    • 14
  • M. Traxler
    • 4
  • R. Trebacz
    • 3
  • H. Tsertos
    • 12
  • V. Wagner
    • 14
  • M. Weber
    • 11
  • C. Wendisch
    • 5
  • M. Wisniowski
    • 3
  • T. Wojcik
    • 3
  • J. Wüstenfeld
    • 5
  • S. Yurevich
    • 4
  • Y. V. 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.Institut für StrahlenphysikHelmholtz-Zentrum Dresden-RossendorfDresdenGermany
  6. 6.Joint Institute of Nuclear ResearchDubnaRussia
  7. 7.Institut für KernphysikJohann Wolfgang Goethe-UniversitätFrankfurtGermany
  8. 8.II.Physikalisches InstitutJustus Liebig Universität GiessenGiessenGermany
  9. 9.Sezione di MilanoIstituto Nazionale di Fisica NucleareMilanoItaly
  10. 10.Institute for Nuclear ResearchRussian Academy of ScienceMoscowRussia
  11. 11.Physik Department E12Technische Universität MünchenMünchenGermany
  12. 12.Department of PhysicsUniversity of CyprusNicosiaCyprus
  13. 13.Institut de Physique Nucléaire (UMR 8608)CNRS/IN2P3 - Université Paris SudOrsay CedexFrance
  14. 14.Nuclear Physics InstituteAcademy of Sciences of Czech RepublicRezCzech Republic
  15. 15.Departamento de Fısica de PartıculasUniversidad de Santiago de CompostelaSantiago de CompostelaSpain
  16. 16.Instituto de Fısica CorpuscularUniversidad de Valencia-CSICValenciaSpain
  17. 17.Excellence Cluster UniverseTechnische Universität MünchenGarchingGermany
  18. 18.ISEC CoimbraCoimbraPortugal
  19. 19.Dipartimento di FisicaUniversità di MilanoMilanoItaly
  20. 20.Technische Universität DresdenDresdenGermany
  21. 21.Lawrence Berkeley National LaboratoryBerkeleyUSA
  22. 22.Dipartimento di Fisica GeneraleUniversità di TorinoTorinoItaly

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