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Study of the reactions γp → K+ Σ± π at photon energies up to 2.6 GeV

  • I. Schulday
  • R. Lawall
  • J. Barth
  • K. -H. Glander
  • S. Goers
  • J. Hannappel
  • N. Jöpen
  • F. Klein
  • E. Klempt
  • D. Menze
  • E. Paul
  • W. J. Schwille
Regular Article - Experimental Physics

Abstract

The reactions γp → K+ Σ± π were studied with the SAPHIR detector using a tagged photon beam at the electron stretcher facility ELSA in Bonn. The decays Σ and Σ + +, 0 were fully reconstructed. Reaction cross-sections were measured as a function of the photon energy from threshold up to 2.6 GeV with considerably improved statistics compared to a previous bubble chamber measurement. The cross-sections rise monotonically with increasing photon energy. The two-particle mass distributions of Σ ± π and K + π show substantial production of resonant states.

Keywords

Background Subtraction Excitation Function Primary Vertex Photon Energy Range Decay Vertex 
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

  • I. Schulday
    • 1
  • R. Lawall
    • 1
  • J. Barth
    • 1
  • K. -H. Glander
    • 1
  • S. Goers
    • 1
  • J. Hannappel
    • 1
  • N. Jöpen
    • 1
  • F. Klein
    • 1
  • E. Klempt
    • 2
  • D. Menze
    • 1
  • E. Paul
    • 1
  • W. J. Schwille
    • 1
  1. 1.Physikalisches Institut der Universität BonnBonnGermany
  2. 2.Helmholtz-Institut für Strahlen- und KernphysikUniversität BonnBonnGermany

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