dorsal/arxiv
View SchemaThe pion photoproduction in the \Delta(1232) region
| Authors | Chung Wen Kao, Thomas D. Cohen |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811062 |
| URL | https://arxiv.org/abs/nucl-th/9811062 |
| DOI | 10.1103/PhysRevC.60.064619 |
| Journal | Phys.Rev. C60 (1999) 064619 |
Abstract
We investigate the pion photoproduction in the \Delta(1232) region in the framework of an effective Lagrangian including pions, nulceon and \Delta(1232). We work to third order in a small scale expansion with both $m_{\pi}$ and $M_{\Delta}-M_N$ treated as light scales. We note that in the $\Delta$ region, straightward power counting breaks as the amplitudes become very large, to deal with this problem, we suggest that the appropriate way to compare theoretical calculations with experimental data is via weighted integrals of the amplitudes through the $\Delta$ region.
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"abstract": "We investigate the pion photoproduction in the \\Delta(1232) region in the\nframework of an effective Lagrangian including pions, nulceon and \\Delta(1232).\nWe work to third order in a small scale expansion with both $m_{\\pi}$ and\n$M_{\\Delta}-M_N$ treated as light scales. We note that in the $\\Delta$ region,\nstraightward power counting breaks as the amplitudes become very large, to deal\nwith this problem, we suggest that the appropriate way to compare theoretical\ncalculations with experimental data is via weighted integrals of the amplitudes\nthrough the $\\Delta$ region.",
"arxiv_id": "nucl-th/9811062",
"authors": [
"Chung Wen Kao",
"Thomas D. Cohen"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.60.064619",
"journal_ref": "Phys.Rev. C60 (1999) 064619",
"title": "The pion photoproduction in the \\Delta(1232) region",
"url": "https://arxiv.org/abs/nucl-th/9811062"
},
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