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Beam Asymmetry Σ in Meson Photoproduction at GRAAL

  • F. Renard
  • J. Ajaka
  • V. Bellini
  • J. P. Bocquet
  • M. Breuer
  • M. Capogni
  • M. Castoldi
  • L. Ciciani
  • A. D’Angelo
  • J.-P. Didelez
  • R. Di Salvo
  • M. A. Duval
  • C. Gaulard
  • F. Ghio
  • B. Girolami
  • M. Guidai
  • E. Hourany
  • I. Kilvington
  • V. Kouznetsov
  • A. Lapik
  • P. Levi Sandri
  • A. Lleres
  • D. Moricciani
  • V. Nedorezov
  • L. Nicoletti
  • C. Perrin
  • D. Rebreyend
  • N. V. Rudnev
  • C. Schaerf
  • A. Turinge
  • A. Zucchiatti
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 10)

Abstract

Meson photoproduction on the nucleon is a major tool for the investigation of nucleon resonances. In particular eta photoproduction selectively probes certain resonances which are difficult to explore with pions. The low energy behaviour of the eta production is dominated by the S 11 (1535) resonance and the influence of other resonances (like D 13(1520)) is difficult to detect. Polarization observables enhance the sensitivity to the contributions of the less pronounced resonances since they depend mostly on the interference between the dominant E 0+ multipole and the smaller ones (like E 2- + M 2- for the D 13(1520))[l].

Keywords

Plastic Scintillator Polarization Observable Nucleon Resonance Decay Photon Meson Photoproduction 
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

© Springer-Verlag/Wien 1999

Authors and Affiliations

  • F. Renard
    • 1
  • J. Ajaka
    • 2
  • V. Bellini
    • 3
  • J. P. Bocquet
    • 1
  • M. Breuer
    • 4
  • M. Capogni
    • 2
  • M. Castoldi
    • 5
  • L. Ciciani
    • 2
  • A. D’Angelo
    • 4
  • J.-P. Didelez
    • 2
  • R. Di Salvo
    • 2
  • M. A. Duval
    • 2
  • C. Gaulard
    • 6
  • F. Ghio
    • 7
  • B. Girolami
    • 7
  • M. Guidai
    • 2
  • E. Hourany
    • 2
  • I. Kilvington
    • 8
  • V. Kouznetsov
    • 9
  • A. Lapik
    • 9
  • P. Levi Sandri
    • 6
  • A. Lleres
    • 1
  • D. Moricciani
    • 4
  • V. Nedorezov
    • 9
  • L. Nicoletti
    • 10
  • C. Perrin
    • 1
  • D. Rebreyend
    • 1
  • N. V. Rudnev
    • 9
  • C. Schaerf
    • 10
    • 4
  • A. Turinge
    • 11
  • A. Zucchiatti
    • 5
  1. 1.IN2P3, Institut des Sciences NucléairesGrenobleFrance
  2. 2.IN2P3, Institut de Physique NucléaireOrsayFrance
  3. 3.INFN, Laboratori Nazionali del Sud and Università di CataniaItaly
  4. 4.INFN, Sezione di RomaIIRomaItaly
  5. 5.INFN, Sezione di GenovaGenovaItaly
  6. 6.INFN, Laboratori Nazionali di FrascatiFrascatiItaly
  7. 7.INFN, Sezione di Roma I and Istituto Superiore di SanitàRomaItaly
  8. 8.European Synchrotron Radiation FacilityGrenobleFrance
  9. 9.Institute for Nuclear ResearchMoscowRussia
  10. 10.Università di Roma “Tor Vergata”RomaItaly
  11. 11.I. Kurchatov Institute of Atomic EnergyMoscowRussia

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