The European Physical Journal A

, Volume 31, Issue 1, pp 61–77 | Cite as

Photoproduction of πmesons off protons from the Δ(1232) region to Eγ = 3 GeV

  • The CB-ELSA Collaboration
  • H. van Pee
  • O. Bartholomy
  • V. Crede
  • A. V. Anisovich
  • G. Anton
  • R. Bantes
  • Yu. Beloglazov
  • R. Bogendörfer
  • R. Castelijns
  • A. Ehmanns
  • J. Ernst
  • I. Fabry
  • H. Flemming
  • A. Fösel
  • M. Fuchs
  • Ch. Funke
  • R. Gothe
  • A. Gridnev
  • E. Gutz
  • St. Höffgen
  • I. Horn
  • J. Hößl
  • J. Junkersfeld
  • H. Kalinowsky
  • F. Klein
  • E. Klempt
  • H. Koch
  • M. Konrad
  • B. Kopf
  • B. Krusche
  • J. Langheinrich
  • H. Löhner
  • I. Lopatin
  • J. Lotz
  • H. Matthäy
  • D. Menze
  • J. Messchendorp
  • V. A. Nikonov
  • D. Novinski
  • M. Ostrick
  • A. Radkov
  • A. V. Sarantsev
  • S. Schadmand
  • C. Schmidt
  • H. Schmieden
  • B. Schoch
  • G. Suft
  • V. Sumachev
  • T. Szczepanek
  • U. Thoma
  • D. Walther
  • Ch. Weinheimer
Regular Article - Hadron Physics

Abstract.

Photoproduction of π0-mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300MeV to 3GeV. Differential cross-sections dσ/dΩ, dσ/dt, and the total cross-section are presented. For E γ < 3GeV, the angular distributions agree well with the SAID parametrization. At photon energies above 1.5GeV, a strong forward peaking indicates t-channel exchange to be the dominant process. The rapid variations of the cross-section with energy and angle indicate production of resonances. An interpretation of the data within the Bonn-Gatchina partial-wave analysis is briefly discussed.

PACS.

13.30.-a Decays of baryons 13.60.Le Meson production 14.20.Gk Baryon resonances with S = 0 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Particle Data Group (W.M. Yao), J. Phys. G 33, 1 (2006).CrossRefADSGoogle Scholar
  2. 2.
    S. Capstick, N. Isgur, Phys. Rev. D 34, 2809 (1986)CrossRefADSGoogle Scholar
  3. 3.
    U. Löring, K. Kretzschmar, B.C. Metsch, H.R. Petry, Eur. Phys. J. A 10, 309 (2001)CrossRefADSGoogle Scholar
  4. 4.
    D.B. Lichtenberg, Phys. Rev. 178, 2197 (1969).CrossRefADSGoogle Scholar
  5. 5.
    E. Klempt, ``Missing resonances'', sect. 5.3 in Lectures given at the 18th Annual Hampton University Graduate Studies (HUGS at JLab 2003), Newport News, Virginia, 2-20 June 2003, arXiv:hep-ph/0404270.Google Scholar
  6. 6.
    O. Bartholomy, Phys. Rev. Lett. 94, 012003 (2005).CrossRefADSGoogle Scholar
  7. 7.
    V. Crede, Phys. Rev. Lett. 94, 012004 (2005).CrossRefADSGoogle Scholar
  8. 8.
    O. Bartholomy, Photoproduction of $\eta$ mesons off protons, in preparation.Google Scholar
  9. 9.
    A. Anisovich, E. Klempt, A. Sarantsev, U. Thoma, Eur. Phys. J. A 24, 111 (2005).CrossRefADSGoogle Scholar
  10. 10.
    A.V. Anisovich, Eur. Phys. J. A 25, 427 (2005).CrossRefADSGoogle Scholar
  11. 11.
    A.V. Sarantsev, Eur. Phys. J. A 25, 441 (2005). CrossRefADSGoogle Scholar
  12. 12.
    R.A. Arndt, http://gwdac.phys.gwu.edu.Google Scholar
  13. 13.
    M. Yoshioka, Nucl. Phys. B 168, 222 (1980).CrossRefADSGoogle Scholar
  14. 14.
    J.C. Bergstrom, R. Igarashi, J.M. Vogt, Phys. Rev. C 55, 2016 (1997).CrossRefADSGoogle Scholar
  15. 15.
    R. Beck, Phys. Rev. Lett. 65, 1841 (1990).CrossRefADSGoogle Scholar
  16. 16.
    R. Beck, Phys. Rev. Lett. 78, 606 (1997).CrossRefADSGoogle Scholar
  17. 17.
    M. Fuchs, Phys. Lett. B 368, 20 (1996).CrossRefADSGoogle Scholar
  18. 18.
    B. Krusche, Eur. Phys. J. A 6, 309 (1999).CrossRefADSGoogle Scholar
  19. 19.
    A. Schmidt, Phys. Rev. Lett. 87, 232501 (2001).CrossRefADSGoogle Scholar
  20. 20.
    J. Ahrens, Phys. Rev. Lett. 88, 232002 (2002).CrossRefADSGoogle Scholar
  21. 21.
    S.B. Gerasimov, Sov. J. Nucl. Phys. 2, 430 (1966) (Yad. Fiz. 2 (1966) 598)Google Scholar
  22. 22.
    G. Blanpied, Phys. Rev. C 64, 025203 (2001).CrossRefADSGoogle Scholar
  23. 23.
    O. Bartalini, Eur. Phys. J. A 26, 399 (2005).CrossRefADSGoogle Scholar
  24. 24.
    R.A. Arndt, Phys. Rev. C 66, 055213 (2002).CrossRefADSGoogle Scholar
  25. 25.
    D. Drechsel, O. Hanstein, S.S. Kamalov, L. Tiator, Nucl. Phys. A 645, 145 (1999).CrossRefADSGoogle Scholar
  26. 26.
    L. Tiator, Eur. Phys. J. A 19, s01, 55 (2004).Google Scholar
  27. 27.
    A. Matsuyama, T. Sato, T.S. Lee, Dynamical coupled-channel model of meson production reactions in the nucleon resonance region, arXiv:nucl-th/0608051.Google Scholar
  28. 28.
    E. Aker, Nucl. Instrum. Methods A 321, 69 (1992).CrossRefADSGoogle Scholar
  29. 29.
    G. Suft, Nucl. Instrum. Methods A 538, 416 (2005).CrossRefADSGoogle Scholar
  30. 30.
    C. Amsler, Z. Phys. C 58, 175 (1993).CrossRefGoogle Scholar
  31. 31.
    B. Krusche, Phys. Rev. Lett. 74, 3736 (1995).CrossRefADSGoogle Scholar
  32. 32.
    A.A. Belyaev, Nucl. Phys. B 213, 201 (1983)CrossRefADSGoogle Scholar
  33. 33.
    K.H. Althoff, Z. Phys. C 18, 199 (1983)CrossRefGoogle Scholar
  34. 34.
    J. Ajaka, Phys. Rev. Lett. 81, 1797 (1998).CrossRefADSGoogle Scholar
  35. 35.
    K.H. Glander, Eur. Phys. J. A 19, 251 (2004).CrossRefADSGoogle Scholar
  36. 36.
    R. Lawall, Eur. Phys. J. A 24, 275 (2005).CrossRefADSGoogle Scholar
  37. 37.
    J.W.C. McNabb, Phys. Rev. C 69, 042201 (2004).CrossRefADSGoogle Scholar
  38. 38.
    R.G.T. Zegers, Phys. Rev. Lett. 91, 092001 (2003).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • The CB-ELSA Collaboration
  • H. van Pee
    • 1
  • O. Bartholomy
    • 1
  • V. Crede
    • 1
    • 2
  • A. V. Anisovich
    • 1
    • 3
  • G. Anton
    • 4
  • R. Bantes
    • 5
  • Yu. Beloglazov
    • 3
  • R. Bogendörfer
    • 4
  • R. Castelijns
    • 6
  • A. Ehmanns
    • 1
  • J. Ernst
    • 1
  • I. Fabry
    • 1
  • H. Flemming
    • 7
  • A. Fösel
    • 4
  • M. Fuchs
    • 1
  • Ch. Funke
    • 1
  • R. Gothe
    • 5
  • A. Gridnev
    • 3
  • E. Gutz
    • 1
  • St. Höffgen
    • 5
  • I. Horn
    • 1
  • J. Hößl
    • 4
  • J. Junkersfeld
    • 1
  • H. Kalinowsky
    • 1
  • F. Klein
    • 5
  • E. Klempt
    • 1
  • H. Koch
    • 7
  • M. Konrad
    • 4
  • B. Kopf
    • 7
  • B. Krusche
    • 8
  • J. Langheinrich
    • 4
  • H. Löhner
    • 6
  • I. Lopatin
    • 3
  • J. Lotz
    • 1
  • H. Matthäy
    • 7
  • D. Menze
    • 5
  • J. Messchendorp
    • 9
  • V. A. Nikonov
    • 1
    • 3
  • D. Novinski
    • 3
  • M. Ostrick
    • 5
  • A. Radkov
    • 3
  • A. V. Sarantsev
    • 1
    • 3
  • S. Schadmand
    • 9
  • C. Schmidt
    • 1
  • H. Schmieden
    • 5
  • B. Schoch
    • 5
  • G. Suft
    • 4
  • V. Sumachev
    • 3
  • T. Szczepanek
    • 1
  • U. Thoma
    • 1
    • 9
  • D. Walther
    • 5
  • Ch. Weinheimer
    • 1
  1. 1.Helmholtz-Institut für Strahlen- und KernphysikUniversität BonnGermany
  2. 2.Department of PhysicsFlorida State UniversityTallahasseeUSA
  3. 3.Petersburg Nuclear Physics InstituteGatchinaRussia
  4. 4.Physikalisches InstitutUniversität ErlangenGermany
  5. 5.Physikalisches InstitutUniversität BonnGermany
  6. 6.Kernfysisch Versneller InstituutGroningenThe Netherlands
  7. 7.Institut für Experimentalphysik IUniversität BochumGermany
  8. 8.Institut für PhysikUniversität BaselSwitzerland
  9. 9.II. Physikalisches InstitutUniversität GießenGermany

Personalised recommendations