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The European Physical Journal A

, Volume 31, Issue 4, pp 441–445 | Cite as

Meson photoproduction on the nucleon with polarized photons

  • The GRAAL Collaboration
  • A. D'AngeloEmail author
  • O. Bartalini
  • V. Bellini
  • J. P. Bocquet
  • P. Calvat
  • M. Capogni
  • L. Casano
  • M. Castoldi
  • J. -P. Didelez
  • R. Di Salvo
  • A. Fantini
  • D. Franco
  • G. Gervino
  • F. Ghio
  • G. Giardina
  • B. Girolami
  • A. Giusa
  • M. Guidal
  • E. Hourani
  • V. Kouznetsov
  • R. Kunne
  • A. Lapik
  • P. Levi Sandri
  • A. Lleres
  • F. Mammoliti
  • G. Mandaglio
  • D. Moricciani
  • A. N. Mushkarenkov
  • V. Nedorezov
  • L. Nicoletti
  • C. Randieri
  • D. Rebreyend
  • F. Renard
  • N. Rudnev
  • T. Russew
  • G. Russo
  • C. Schaerf
  • M. -L. Sperduto
  • M. -C. Sutera
  • A. Turinge
  • V. Vegna
QNP 2006

Abstract.

Meson photoproduction with polarized photons has proved to be a powerful tool to identify contributions of baryon resonances that are not evident in the differential cross-sections. It provides information that are complementary to those extracted using pion-nucleon scattering data. Extensive results have been produced in the past on beam asymmetries by the Graal collaboration for η and π 0 on the proton. New results are now available for the same reactions on the quasi-free neutron and for the K+ photoproduction on the proton. Contributions from hitherto undetected baryon resonances may be important to understand the results.

PACS.

13.60.Le Meson production 13.88.+e Polarization in interactions and scattering 25.20.Lj Photoproduction reactions 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • The GRAAL Collaboration
  • A. D'Angelo
    • 3
    • 10
    Email author
  • O. Bartalini
    • 3
    • 10
  • V. Bellini
    • 1
    • 6
  • J. P. Bocquet
    • 13
  • P. Calvat
    • 13
  • M. Capogni
    • 3
    • 10
  • L. Casano
    • 10
  • M. Castoldi
    • 8
  • J. -P. Didelez
    • 15
  • R. Di Salvo
    • 10
  • A. Fantini
    • 3
    • 10
  • D. Franco
    • 3
    • 10
  • G. Gervino
    • 4
    • 11
  • F. Ghio
    • 9
    • 12
  • G. Giardina
    • 2
    • 7
  • B. Girolami
    • 9
    • 12
  • A. Giusa
    • 1
    • 7
  • M. Guidal
    • 15
  • E. Hourani
    • 15
  • V. Kouznetsov
    • 14
  • R. Kunne
    • 15
  • A. Lapik
    • 14
  • P. Levi Sandri
    • 5
  • A. Lleres
    • 13
  • F. Mammoliti
    • 1
    • 7
  • G. Mandaglio
    • 2
    • 7
  • D. Moricciani
    • 10
  • A. N. Mushkarenkov
    • 14
  • V. Nedorezov
    • 14
  • L. Nicoletti
    • 3
    • 10
    • 13
  • C. Randieri
    • 1
    • 5
  • D. Rebreyend
    • 13
  • F. Renard
    • 13
  • N. Rudnev
    • 14
  • T. Russew
    • 13
  • G. Russo
    • 1
    • 7
  • C. Schaerf
    • 3
    • 10
  • M. -L. Sperduto
    • 1
    • 7
  • M. -C. Sutera
    • 7
  • A. Turinge
    • 14
  • V. Vegna
    • 3
    • 10
  1. 1.Dipartimento di Fisica ed AstronomiaUniversità di CataniaCataniaItaly
  2. 2.Dipartimento di FisicaUniversità di MessinaMessinaItaly
  3. 3.Dipartimento di FisicaUniversità di Roma “Tor Vergata”RomaItaly
  4. 4.Dipartimento di Fisica SperimentaleUniversità di TorinoTorinoItaly
  5. 5.Laboratori Nazionali di FrascatiINFNFrascatiItaly
  6. 6.Laboratori Nazionali del SudINFNCataniaItaly
  7. 7.Sezione di CataniaINFNCataniaItaly
  8. 8.Sezione di GenovaINFNGenovaItaly
  9. 9.Sezione di RomaINFNRomaItaly
  10. 10.Sezione di Roma “Tor Vergata”INFNRomaItaly
  11. 11.Sezione di TorinoINFNTorinoItaly
  12. 12.Istituto Superiore di SanitàRomaItaly
  13. 13.Laboratoire de Physique Subatomique et de CosmologieIN2P3GrenobleFrance
  14. 14.Institute for Nuclear ResearchMoscowRussia
  15. 15.Institut de Physique NucléaireIN2P3OrsayFrance

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