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Measurement of πphotoproduction on the proton from 550 to 1500 MeV at GRAAL

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Abstract.

Neutral pion photoproduction has been measured from 550 to 1500 MeV with the GRAAL facility, located at the ESRF in Grenoble. Differential cross-section and beam asymmetry have been measured over a wide angular range. These high-precision data improve significantly the database for the beam asymmetry in the second and third resonance regions covering for the first time the energy domain 1100-1500 MeV. New partial-wave analyses including these data are presented for which the beam asymmetry brings crucial constraints.

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Authors and Affiliations

  1. Dipartimento di Fisica ed Astronomia, Università di Catania, via Santa Sofia 64, I-95123, Catania, Italy

    V. Bellini, A. Giusa, G. Russo & M. -L. Sperduto

  2. Dipartimento di Fisica, Università di Roma “Tor Vergata”, via della Ricerca Scientifica 1, I-00133, Roma, Italy

    O. Bartalini, M. Capogni, A. D'Angelo, A. Fantini, L. Nicoletti & C. Schaerf

  3. Dipartimento di Fisica Sperimentale, Università di Torino, via P. Giuria, I-00125, Torino, Italy

    G. Gervino

  4. Laboratori Nazionali di Frascati, INFN, via E. Fermi 40, I-00044, Frascati (Roma), Italy

    C. Gaulard & P. Levi Sandri

  5. Laboratori Nazionali del Sud, INFN, via Santa Sofia 44, I-95123, Catania, Italy

    V. Bellini

  6. Sezione di Catania, INFN, via Santa Sofia 64, I-95123, Catania, Italy

    A. Giusa, G. Russo, M. -L. Sperduto & M. -C. Sutera

  7. Sezione di Genova, INFN, via Dodecanneso 33, I-16146, Genova, Italy

    M. Castoldi

  8. Sezione di Roma I, INFN, piazzale Aldo Moro 2, I-00185, Roma, Italy

    F. Ghio & B. Girolami

  9. Sezione di Roma II, INFN, via della Ricerca Scientifica 1, I-00133, Roma, Italy

    O. Bartalini, M. Capogni, L. Casano, A. D'Angelo, R. Di Salvo, A. Fantini, D. Moricciani, L. Nicoletti & C. Schaerf

  10. Sezione di Torino, INFN, I-10125, Torino, Italy

    G. Gervino

  11. Instituto Superiore di Sanità, viale Regina Elena 299, I-00161, Roma, Italy

    F. Ghio & B. Girolami

  12. Laboratoire de Physique Subatomique et de Cosmologie, IN2P3, F-38026, Grenoble, France

    J. P. Bocquet, P. Calvat, A. Lleres, L. Nicoletti, C. Perrin, D. Rebreyend, F. Renard & T. Russew

  13. Institute for Nuclear Research, 117312, Moscow, Russia

    V. Kouznetsov, A. Lapik, A. N. Mushkarenkov, V. Nedorezov, N. Rudnev & A. Turinge

Authors
  1. O. Bartalini
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  2. V. Bellini
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  3. J. P. Bocquet
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  4. M. Capogni
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  5. L. Casano
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  6. M. Castoldi
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  7. P. Calvat
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  8. A. D'Angelo
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  9. R. Di Salvo
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  10. A. Fantini
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  11. C. Gaulard
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  12. G. Gervino
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  13. F. Ghio
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  14. B. Girolami
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  15. A. Giusa
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  16. V. Kouznetsov
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  17. A. Lapik
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  18. P. Levi Sandri
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  19. A. Lleres
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  20. D. Moricciani
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  21. A. N. Mushkarenkov
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  22. V. Nedorezov
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  23. L. Nicoletti
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  24. C. Perrin
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  25. D. Rebreyend
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  26. F. Renard
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  27. N. Rudnev
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  28. T. Russew
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  29. G. Russo
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  30. C. Schaerf
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  31. M. -L. Sperduto
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  32. M. -C. Sutera
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  33. A. Turinge
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Corresponding author

Correspondence to A. Lleres.

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P. Picozza

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Bartalini, O., Bellini, V., Bocquet, J.P. et al. Measurement of πphotoproduction on the proton from 550 to 1500 MeV at GRAAL. Eur. Phys. J. A 26, 399–419 (2005). https://doi.org/10.1140/epja/i2005-10191-2

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  • DOI: https://doi.org/10.1140/epja/i2005-10191-2

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