dorsal/arxiv
View SchemaElectroexcitation of the P33(1232), P11(1440), D13(1520), S11(1535) at Q^2=0.4 and 0.65(GeV/c)^2
| Authors | I. G. Aznauryan, V. D. Burkert, H. Egiyan, K. Joo, R. Minehart, L. C. Smith |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0407021 |
| URL | https://arxiv.org/abs/nucl-th/0407021 |
| DOI | 10.1103/PhysRevC.71.015201 |
| Journal | Phys.Rev.C71:015201,2005 |
Abstract
Using two approaches: dispersion relations and isobar model, we have analyzed recent high precision CLAS data on cross sections of \pi^0, \pi^+, and \eta electroproduction on protons, and the longitudinally polarized electron beam asymmetry for p(\vec{e},e'p)\pi^0 and p(\vec{e},e'n)\pi^+. The contributions of the resonances P33(1232), P11(1440), D13(1520), S11(1535) to \pi electroproduction and S11(1535) to \eta electroproduction are found. The results obtained in the two approaches are in good agreement with each other. There is also good agreement between amplitudes of the \gamma^* N \to S11(1535) transition found in \pi and \eta electroproduction. For the first time accurate results are obtained for the longitudinal amplitudes of the P11(1440), D13(1520) and S11(1535) electroexcitation on protons.
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"abstract": "Using two approaches: dispersion relations and isobar model, we have analyzed\nrecent high precision CLAS data on cross sections of \\pi^0, \\pi^+, and \\eta\nelectroproduction on protons, and the longitudinally polarized electron beam\nasymmetry for p(\\vec{e},e\u0027p)\\pi^0 and p(\\vec{e},e\u0027n)\\pi^+. The contributions of\nthe resonances P33(1232), P11(1440), D13(1520), S11(1535) to \\pi\nelectroproduction and S11(1535) to \\eta electroproduction are found. The\nresults obtained in the two approaches are in good agreement with each other.\nThere is also good agreement between amplitudes of the \\gamma^* N \\to S11(1535)\ntransition found in \\pi and \\eta electroproduction. For the first time accurate\nresults are obtained for the longitudinal amplitudes of the P11(1440),\nD13(1520) and S11(1535) electroexcitation on protons.",
"arxiv_id": "nucl-th/0407021",
"authors": [
"I. G. Aznauryan",
"V. D. Burkert",
"H. Egiyan",
"K. Joo",
"R. Minehart",
"L. C. Smith"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.71.015201",
"journal_ref": "Phys.Rev.C71:015201,2005",
"title": "Electroexcitation of the P33(1232), P11(1440), D13(1520), S11(1535) at Q^2=0.4 and 0.65(GeV/c)^2",
"url": "https://arxiv.org/abs/nucl-th/0407021"
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