Simultaneous Photoproduction ofηandπ0Mesons on the Proton
Copyright policy )Simultaneous Photoproduction ofηandπ0Mesons on the Proton
The analysis of the gammap-->etapi(0)p reaction has been performed using data from the GRAAL experiment. The total and differential cross sections and the beam asymmetry have been obtained from threshold up to 1.5 GeV of beam energy. The two resonances S11(1535) and Delta(1700) are expected to be excited in the intermediate states of this reaction. The results are used to test predictions based on the assumption that both resonances are dynamically generated from the meson-baryon interaction provided by chiral Lagrangians. The term involving the Delta(1700) excitation, followed by the decay into etaDelta(1232), is found to be dominant.
- University of Valencia Spain
- University of Georgia Georgia
- University of Rome Tor Vergata Italy
- National Institute for Nuclear Physics Italy
- Forschungszentrum Jülich Germany
effective Lagrangian: chiral, Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Beam energy, eta: photoproduction, Resonance, energy dependence, polarization: asymmetry, interpretation of experiments: Grenoble ESRF, photon p: interaction, pi0: associated production, Chirality, Chirality; Photochemical reactions; Protons; Resonance; Beam asymmetry; Beam energy; Mesons; Photoproduction; Bosons, numerical calculations, Bosons, info:eu-repo/classification/ddc/550, cross section, N(1535), < 1.5 GeV: (1)), photon: polarized beam, photon p --> p eta pi0, Photochemical reaction, Meson, Delta(1700), Photoproduction, Beam asymmetry, nucleon resonance: intermediate boson, Proton
effective Lagrangian: chiral, Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Beam energy, eta: photoproduction, Resonance, energy dependence, polarization: asymmetry, interpretation of experiments: Grenoble ESRF, photon p: interaction, pi0: associated production, Chirality, Chirality; Photochemical reactions; Protons; Resonance; Beam asymmetry; Beam energy; Mesons; Photoproduction; Bosons, numerical calculations, Bosons, info:eu-repo/classification/ddc/550, cross section, N(1535), < 1.5 GeV: (1)), photon: polarized beam, photon p --> p eta pi0, Photochemical reaction, Meson, Delta(1700), Photoproduction, Beam asymmetry, nucleon resonance: intermediate boson, Proton
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