The European Physical Journal A

, Volume 35, Issue 3, pp 333–342 | Cite as

K0πand K*0Σ+ photoproduction off the proton

  • The CBELSA/TAPS Collaboration
  • M. Nanova
  • J. C. S. Bacelar
  • B. Bantes
  • O. Bartholomy
  • D. Bayadilov
  • R. Beck
  • Y. A. Beloglazov
  • R. Castelijns
  • V. Crede
  • H. Dutz
  • A. Ehmanns
  • D. Elsner
  • K. Essig
  • R. Ewald
  • I. Fabry
  • K. Fornet-Ponse
  • M. Fuchs
  • Ch. Funke
  • R. Gothe
  • R. Gregor
  • A. B. Gridnev
  • E. Gutz
  • P. Hoffmeister
  • I. Horn
  • I. Jaegle
  • J. Junkersfeld
  • H. Kalinowsky
  • S. Kammer
  • V. Kleber
  • Frank Klein
  • Friedrich Klein
  • E. Klempt
  • M. Konrad
  • M. Kotulla
  • B. Krusche
  • M. Lang
  • J. Langheinrich
  • H. Löhner
  • I. V. Lopatin
  • J. Lotz
  • S. Lugert
  • D. Menze
  • J. G. Messchendorp
  • T. Mertens
  • V. Metag
  • C. Morales
  • D. V. Novinski
  • R. Novotny
  • M. Ostrick
  • L. M. Pant
  • H. van Pee
  • M. Pfeiffer
  • A. Radkov
  • A. Roy
  • S. Schadmand
  • Ch. Schmidt
  • H. Schmieden
  • B. Schoch
  • S. V. Shende
  • V. Sokhoyan
  • A. Süle
  • V. V. Sumachev
  • T. Szczepanek
  • U. Thoma
  • D. Trnka
  • R. Varma
  • D. Walther
  • Ch. Weinheimer
  • Ch. Wendel
Regular Article - Experimental Physics

Abstract.

The exclusive reactions γpK*0Σ+(1189) and γpK0π0Σ+(1189) , leading to the p0 final state, have been measured with a tagged photon beam for incident energies from threshold up to 2.5GeV. The experiment has been performed at the tagged photon facility of the ELSA accelerator (Bonn). The Crystal Barrel and TAPS detectors were combined to a photon detector system of almost 4π geometrical acceptance. Differential and total cross-sections are reported. At energies close to the threshold, a flat angular distribution has been observed for the reaction γpK0π0Σ+ suggesting dominant s -channel production. Σ*(1385) and higher-lying hyperon states have been observed. An enhancement in the forward direction in the angular distributions of the reaction γpK*0Σ+ indicates a t -channel exchange contribution to the reaction mechanism. The experimental data are in reasonable agreement with recent theoretical predictions.

PACS.

13.60.Le Meson production 25.20.Lj Photoproduction reactions 14.20.Jn Hyperons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2008

Authors and Affiliations

  • The CBELSA/TAPS Collaboration
  • M. Nanova
    • 1
  • J. C. S. Bacelar
    • 2
  • B. Bantes
    • 3
  • O. Bartholomy
    • 4
  • D. Bayadilov
    • 4
    • 5
  • R. Beck
    • 4
  • Y. A. Beloglazov
    • 5
  • R. Castelijns
    • 2
  • V. Crede
    • 6
  • H. Dutz
    • 3
  • A. Ehmanns
    • 4
  • D. Elsner
    • 3
  • K. Essig
    • 4
  • R. Ewald
    • 3
  • I. Fabry
    • 4
  • K. Fornet-Ponse
    • 3
  • M. Fuchs
    • 4
  • Ch. Funke
    • 4
  • R. Gothe
    • 3
  • R. Gregor
    • 1
  • A. B. Gridnev
    • 5
  • E. Gutz
    • 4
  • P. Hoffmeister
    • 4
  • I. Horn
    • 4
  • I. Jaegle
    • 7
  • J. Junkersfeld
    • 4
  • H. Kalinowsky
    • 4
  • S. Kammer
    • 3
  • V. Kleber
    • 3
  • Frank Klein
    • 3
  • Friedrich Klein
    • 3
  • E. Klempt
    • 4
  • M. Konrad
    • 3
  • M. Kotulla
    • 1
  • B. Krusche
    • 7
  • M. Lang
    • 4
  • J. Langheinrich
    • 3
  • H. Löhner
    • 2
  • I. V. Lopatin
    • 5
  • J. Lotz
    • 4
  • S. Lugert
    • 1
  • D. Menze
    • 3
  • J. G. Messchendorp
    • 2
  • T. Mertens
    • 7
  • V. Metag
    • 1
  • C. Morales
    • 3
  • D. V. Novinski
    • 5
  • R. Novotny
    • 1
  • M. Ostrick
    • 3
  • L. M. Pant
    • 1
  • H. van Pee
    • 4
  • M. Pfeiffer
    • 1
  • A. Radkov
    • 5
  • A. Roy
    • 1
  • S. Schadmand
    • 1
  • Ch. Schmidt
    • 4
  • H. Schmieden
    • 3
  • B. Schoch
    • 3
  • S. V. Shende
    • 2
  • V. Sokhoyan
    • 4
  • A. Süle
    • 3
  • V. V. Sumachev
    • 5
  • T. Szczepanek
    • 4
  • U. Thoma
    • 1
    • 4
  • D. Trnka
    • 1
  • R. Varma
    • 1
  • D. Walther
    • 3
    • 4
  • Ch. Weinheimer
    • 4
  • Ch. Wendel
    • 4
  1. 1.II. Physikalisches InstitutUniversität GießenGermany
  2. 2.Kernfysisch Versneller InstitutGroningenThe Netherlands
  3. 3.Physikalisches InstitutUniversität BonnGermany
  4. 4.Helmholtz-Institut für Strahlen- u. KernphysikUniversität BonnGermany
  5. 5.Petersburg Nuclear Physics InstituteGatchinaRussia
  6. 6.Department of PhysicsFlorida State UniversityTallahasseeUSA
  7. 7.Physikalisches InstitutUniversität BaselSwitzerland

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