Pion Photoproduction off Nucleon with Hamiltonian Effective Field Theory

Abstract

We analyze the $\gamma N\to \pi N$ 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 $N^{\ast }(1535)$ is important for improving the consistence between our results and the experimental data.

10 pages, 4 figures; published version. We thank the referee for the useful improvement!

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Cited by in corpus (6)

• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• Roles of the $N(1535)$ and $a_0(980)$ in the process ${\Lambda }_c^{+}\to {\pi }^{+}\eta n$
• Pion photoproduction of nucleon excited states with Hamiltonian effective field theory
• The dynamically generated $N(1535)$ state in the ${\Lambda }_c^{+}\to p{\bar{K}}^0{\pi }^0$ decay
• Probing the isospin structure and low-lying resonances in ${\Lambda }_c^{+}\to n{\bar{K}}^0{\pi }^{+}$ decays