dorsal/arxiv
View SchemaPion and photon couplings of N* resonances from scattering on the proton
| Authors | A. Yu. Korchin, O. Scholten, R. G. E. Timmermans |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811042 |
| URL | https://arxiv.org/abs/nucl-th/9811042 |
| DOI | 10.1016/S0370-2693(98)01041-7 |
| Journal | Phys.Lett. B438 (1998) 1-8 |
Abstract
Results of a relativistic model for pion- and photon-induced reactions on the proton are presented. The model is crossing symmetric and gauge invariant. The nucleon resonances P_11 (1440), P_11 (1710), D_13 (1520), S_11 (1535), S_11 (1650), P_33 (1232), P_33 (1600), S_31 (1620), and D_33 (1700) have been included explicitly in the calculation. Unitarity within the channel space \pi N + \gamma N below the two-pion production threshold has been achieved by using the K-matrix approach. Strong and electromagnetic coupling parameters of the N* resonances have been determined from a fit to the pion-nucleon phase shifts, pion-photoproduction multipoles and Compton-scattering cross sections. The model is shown to describe simultaneously most of the available data. Results for the electric and magnetic polarizabilities of the nucleon are presented.
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"abstract": "Results of a relativistic model for pion- and photon-induced reactions on the\nproton are presented. The model is crossing symmetric and gauge invariant. The\nnucleon resonances P_11 (1440), P_11 (1710), D_13 (1520), S_11 (1535), S_11\n(1650), P_33 (1232), P_33 (1600), S_31 (1620), and D_33 (1700) have been\nincluded explicitly in the calculation. Unitarity within the channel space \\pi\nN + \\gamma N below the two-pion production threshold has been achieved by using\nthe K-matrix approach. Strong and electromagnetic coupling parameters of the N*\nresonances have been determined from a fit to the pion-nucleon phase shifts,\npion-photoproduction multipoles and Compton-scattering cross sections. The\nmodel is shown to describe simultaneously most of the available data. Results\nfor the electric and magnetic polarizabilities of the nucleon are presented.",
"arxiv_id": "nucl-th/9811042",
"authors": [
"A. Yu. Korchin",
"O. Scholten",
"R. G. E. Timmermans"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(98)01041-7",
"journal_ref": "Phys.Lett. B438 (1998) 1-8",
"title": "Pion and photon couplings of N* resonances from scattering on the proton",
"url": "https://arxiv.org/abs/nucl-th/9811042"
},
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