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Measurement of \( \Sigma\) beam asymmetry in \( \pi^{0}_{}\) photoproduction off the neutron in the second and third resonances region⋆

  • Regular Article - Experimental Physics
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Abstract

The \( \Sigma\) beam asymmetry in the photoproduction of neutral pions from quasi-free nucleons in a deuteron target was measured for the first time between 0.60 and 1.50GeV, with the GRAAL polarized and tagged photon beam. The asymmetry values from the quasi-free proton were found equal to the ones extracted from a pure proton target. The asymmetries from quasi-free proton and quasi-free neutron were found equal up to 0.82GeV and substantially different at higher energies. The results are compared with recent partial-wave analyses.

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Authors and Affiliations

  1. INFN - Sezione di Roma “Tor Vergata”, via della Ricerca Scientifica 1, I-00133, Roma, Italy

    R. Di Salvo, A. Fantini, L. Casano, A. D’angelo, D. Franco, D. Moricciani, C. Schaerf & V. Vegna

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

    G. Mandaglio, F. Mammoliti, G. Giardina, A. Giusa, M. Manganaro, G. Russo, M. L. Sperduto & M. C. Sutera

  3. INFN - Laboratori Nazionali di Frascati, via Enrico Fermi 40, I-00044, Frascati, Italy

    O. Bartalini, P. Levi Sandri & C. Randieri

  4. INFN - Laboratori Nazionali del Sud, via Santa Sofia 64, I-95123, Catania, Italy

    V. Bellini

  5. Institut National Polytechnique de Grenoble, LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, 53 Avenue des Martyrs, 38026, Grenoble, France

    J. P. Bocquet, A. Lleres & D. Rebreyend

  6. IPNO, Université de Paris-Sud 11, CNRS/IN2P3, 15 rue Georges Clémenceau, 91406, Orsay, France

    J. P. Didelez, M. Guidal, E. Hourany & R. Kunne

  7. INFN - Sezione di Torino, via P. Giuria, I-10125, Torino, Italy

    G. Gervino

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

    F. Ghio & B. Girolami

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

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

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

    A. Fantini, O. Bartalini, A. D’angelo, D. Franco, C. Schaerf & V. Vegna

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

    F. Mammoliti, V. Bellini, A. Giusa, C. Randieri, G. Russo & M. L. Sperduto

  12. Università di Torino, via P. Giuria, I-00125, Torino, Italy

    G. Gervino

  13. Istituto Superiore di Sanità, viale Regina Elena 299, I-00161, Roma, Italy

    F. Ghio & B. Girolami

  14. Dipartimento di Fisica, Università di Messina, salita Sperone 31, I-98166, Messina, Italy

    G. Mandaglio, G. Giardina & M. Manganaro

  15. Laboratory of Mathematical Physics, Tomsk Polytechnic University, 634050, Tomsk, Russia

    A. Fix

  16. Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099, Mainz, Germany

    S. S. Kamalov & L. Tiator

  17. Laboratory of Theoretical Physics, JINR Dubna, 141980, Moscow region, Russia

    S. S. Kamalov

Authors
  1. R. Di Salvo
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  2. A. Fantini
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  3. G. Mandaglio
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  4. F. Mammoliti
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  5. O. Bartalini
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  6. V. Bellini
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  7. J. P. Bocquet
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  8. L. Casano
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  9. A. D’angelo
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  10. J. P. Didelez
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  11. D. Franco
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  12. G. Gervino
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  13. F. Ghio
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  14. G. Giardina
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  15. B. Girolami
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  16. A. Giusa
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  17. M. Guidal
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  18. E. Hourany
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  19. R. Kunne
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  20. A. Lapik
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  21. P. Levi Sandri
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  22. A. Lleres
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  23. M. Manganaro
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  24. D. Moricciani
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  25. A. N. Mushkarenkov
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  26. V. Nedorezov
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  27. C. Randieri
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  28. D. Rebreyend
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  29. N. Rudnev
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  30. G. Russo
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  31. C. Schaerf
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  32. M. L. Sperduto
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  33. M. C. Sutera
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  34. A. Turinge
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  35. V. Vegna
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  36. A. Fix
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  37. S. S. Kamalov
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  38. L. Tiator
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Corresponding author

Correspondence to P. Levi Sandri.

Additional information

Communicated by Z.-E. Meziani

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Di Salvo, R., Fantini, A., Mandaglio, G. et al. Measurement of \( \Sigma\) beam asymmetry in \( \pi^{0}_{}\) photoproduction off the neutron in the second and third resonances region⋆ . Eur. Phys. J. A 42, 151 (2009). https://doi.org/10.1140/epja/i2009-10870-x

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  • DOI: https://doi.org/10.1140/epja/i2009-10870-x

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