Measurement of Σ beam asymmetry in π0 photoproduction off the neutron in the second and third resonances region

R. Di Salvo, A. Fantini, G. Mandaglio, F. Mammoliti, O. Bartalini, V. Bellini, J. P. Bocquet, L. Casano, A. D'angelo, J. P. Didelez, D. Franco, G. Gervino, F. Ghio, G. Giardina, B. Girolami, A. Giusa, M. Guidal, E. Hourany, R. Kunne, A. LapikP. Levi Sandri, A. Lleres, M. Manganaro, D. Moricciani, A. N. Mushkarenkov, V. Nedorezov, C. Randieri, D. Rebreyend, N. Rudnev, G. Russo, C. Schaerf, M. L. Sperduto, M. C. Sutera, A. Turinge, V. Vegna, A. Fix, S. S. Kamalov, L. Tiator

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Abstract

The Σ 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.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalEuropean Physical Journal A
Volume42
Issue number2
DOIs
Publication statusPublished - Nov 2009

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Di Salvo, R., Fantini, A., Mandaglio, G., Mammoliti, F., Bartalini, O., Bellini, V., ... Tiator, L. (2009). Measurement of Σ beam asymmetry in π0 photoproduction off the neutron in the second and third resonances region. European Physical Journal A, 42(2), 151-157. https://doi.org/10.1140/epja/i2009-10870-x