Measurement of the reaction γp → K0Σat photon energies up to 2.6 GeV

  • R. Lawall
  • J. Barth
  • C. Bennhold
  • K. -H. Glander
  • S. Goers
  • J. Hannappel
  • N. Jöpen
  • F. Klein
  • E. Klempt
  • T. Mart
  • D. Menze
  • M. Ostrick
  • E. Paul
  • I. Schulday
  • W. J. Schwille
  • F. W. Wieland
  • C. Wu
Original Article

Abstract.

The reaction γpK0Σ+ was measured in the photon energy range from threshold up to 2.6 GeV with the SAPHIR detector at the electron stretcher facility, ELSA, in Bonn. Results are presented on the reaction cross-section and the polarization of the Σ+ as a function of the kaon production angle in the centre-of-mass system, cosΘc.m.K, and the photon energy. The cross-section is lower and varies less with photon energy and kaon production angle than that of γpK+Σ0. The Σ+ is polarized predominantly at cosΘc.m.K ≈ 0. The data presented here are more precise than previous ones obtained with SAPHIR and extend the photon energy range to higher values. They are compared to isobar model calculations.

PACS.

13.60.Le Meson production 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • R. Lawall
    • 1
  • J. Barth
    • 1
  • C. Bennhold
    • 3
  • K. -H. Glander
    • 1
  • S. Goers
    • 1
  • J. Hannappel
    • 1
  • N. Jöpen
    • 1
  • F. Klein
    • 1
  • E. Klempt
    • 2
  • T. Mart
    • 4
  • D. Menze
    • 1
  • M. Ostrick
    • 1
  • E. Paul
    • 1
  • I. Schulday
    • 1
  • W. J. Schwille
    • 1
  • F. W. Wieland
    • 1
  • C. Wu
    • 1
  1. 1.Physikalisches Institut der Universität BonnBonnGermany
  2. 2.Helmholtz-Institut für Strahlen- und Kernphysik BonnBonnGermany
  3. 3.Department of PhysicsThe George Washington UniversityWashingtonUSA
  4. 4.Departemen Fisika, FMIPAUniversitas IndonesiaDepokIndonesia

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