Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory
Dan Guo,
Zhan-Wei Liu
Abstract:We analyze the γN → πN process in the negative parity channel with Hamiltonian effective filed theory which is successful in studying the nucleon resonances associated with the meson-nucleon scattering and lattice QCD simulations. We provide the scattering amplitude of pion photoproduction and extract the electric dipole amplitudes E 0+ . The triquark component in N * (1535) is important for improving the consistence between our results and the experimental data.
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