Total and differential cross-sections for the \(pp\rightarrow pp\eta^\prime\) reaction near threshold

  • A. Khoukaz
  • I. Geck
  • C. Quentmeier
  • H.-H. Adam
  • A. Budzanowski
  • R. Czyżykiewicz
  • D. Grzonka
  • L. Jarczyk
  • K. Kilian
  • P. Kowina
  • N. Lang
  • T. Lister
  • P. Moskal
  • W. Oelert
  • C. Piskor-Ignatowicz
  • T. Rożek
  • R. Santo
  • G. Schepers
  • T. Sefzick
  • S. Sewerin
  • M. Siemaszko
  • J. Smyrski
  • A. Strzałkowski
  • A. Täschner
  • P. Winter
  • M. Wolke
  • P. Wüstner
  • W. Zipper

Abstract.

The \(\eta^\prime\)-meson production in the reaction \(pp\rightarrow pp\eta^\prime\) has been studied at excess energies of Q = 26.5, 32.5 and 46.6 MeV using the internal beam facility COSY-11 at the cooler synchrotron COSY. The total cross-sections as well as one angular distribution for the highest Q-value are presented. The excitation function of the near-threshold data can be described by a pure s-wave phase space distribution with the inclusion of the proton-proton final-state interaction and Coulomb effects. The obtained angular distribution of the \(\eta^\prime\)-mesons is also consistent with pure s-wave production.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • A. Khoukaz
    • 1
  • I. Geck
    • 1
  • C. Quentmeier
    • 1
  • H.-H. Adam
    • 1
  • A. Budzanowski
    • 2
  • R. Czyżykiewicz
    • 3
  • D. Grzonka
    • 4
  • L. Jarczyk
    • 3
  • K. Kilian
    • 4
  • P. Kowina
    • 4
    • 5
  • N. Lang
    • 1
  • T. Lister
    • 1
  • P. Moskal
    • 3
    • 4
  • W. Oelert
    • 4
  • C. Piskor-Ignatowicz
    • 3
  • T. Rożek
    • 5
  • R. Santo
    • 1
  • G. Schepers
    • 4
  • T. Sefzick
    • 4
  • S. Sewerin
    • 4
  • M. Siemaszko
    • 5
  • J. Smyrski
    • 3
  • A. Strzałkowski
    • 3
  • A. Täschner
    • 1
  • P. Winter
    • 4
  • M. Wolke
    • 4
  • P. Wüstner
    • 4
  • W. Zipper
    • 5
  1. 1.Institut für KernphysikWestfälische Wilhelms-UniversitätMünsterGermany
  2. 2.Institute of Nuclear PhysicsCracowPoland
  3. 3.Institute of PhysicsJagellonian UniversityCracowPoland
  4. 4.IKP and ZELForschungszentrum JülichJülichGermany
  5. 5.Institute of PhysicsUniversity of SilesiaKatowicePoland

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