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Measurement of Sigma beam asymmetry in pi(0) photoproduction off the neutron in the second and third resonances region

Author:: Di Salvo, R. Fantini, A. Mandaglio, G. Mammoliti, F. Bartalini, O. Bellini, V. Bocquet, J. P. Casano, L. D'angelo, A. Didelez, J. P. Franco, D. Gervino, G. Ghio, F. Giardina, G. Girolami, B. Giusa, A. Guidal, M. Hourany, E. Kunne, R. Lapik, A. Sandri, P. Levi Lleres, A. Manganaro, M. Moricciani, D. Mushkarenkov, A. N. Nedorezov, V. Randieri, C. Rebreyend, D. Rudnev, N. Russo, G. Schaerf, C. Sperduto, M. L. Sutera, M. C. Turinge, A. Vegna, V. Fix, A. Kamalov, S. S. Tiator, L.
Journal:: EUROPEAN PHYSICAL JOURNAL A
Issue Date:: 2009
Abstract(summary):: 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 1.50 GeV, 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 0.82 GeV and substantially different at higher energies. The results are compared with recent partial-wave analyses.
Page:: 151---157

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Measurement of Sigma beam asymmetry in pi(0) photoproduction off the neutron in the second and third resonances region

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