dorsal/arxiv
View SchemaAbsorption mechanisms in photon induced two-body knockout
| Authors | L. Machenil, M. Vanderhaeghen, J. Ryckebusch, M. Waroquier |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9307002 |
| URL | https://arxiv.org/abs/nucl-th/9307002 |
| DOI | 10.1016/0370-2693(93)90650-7 |
| Journal | Phys.Lett. B316 (1993) 17-22 |
Abstract
Calculations have been performed for the $^{16}$O($\gamma$,pn) and the $^{16}$O($\gamma$,pp) reaction in the photon-energy range $E_{\gamma}$ = 60-300 MeV. Besides the contribution from the more common photoabsorption on the pionic degrees of freedom, we have investigated the influence of heavier meson exchange ($\rho, \sigma, \omega$) and intermediate $\Delta$ creation with $\pi$ and $\rho$ exchange. Whereas the $\pi$ meson is found to set the main trends, the $\rho$ meson is found not to be discardable in a theoretical description of the ($\gamma$,pn) reaction. The incorporation of an energy dependence and a decay width in the $\Delta$ propagator is observed to be essential in order to arrive at a more realistic description of ($\gamma$,NN) reactions at higher photon energies.
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"abstract": "Calculations have been performed for the $^{16}$O($\\gamma$,pn) and the\n$^{16}$O($\\gamma$,pp) reaction in the photon-energy range $E_{\\gamma}$ = 60-300\nMeV. Besides the contribution from the more common photoabsorption on the\npionic degrees of freedom, we have investigated the influence of heavier meson\nexchange ($\\rho, \\sigma, \\omega$) and intermediate $\\Delta$ creation with $\\pi$\nand $\\rho$ exchange. Whereas the $\\pi$ meson is found to set the main trends,\nthe $\\rho$ meson is found not to be discardable in a theoretical description of\nthe ($\\gamma$,pn) reaction. The incorporation of an energy dependence and a\ndecay width in the $\\Delta$ propagator is observed to be essential in order to\narrive at a more realistic description of ($\\gamma$,NN) reactions at higher\nphoton energies.",
"arxiv_id": "nucl-th/9307002",
"authors": [
"L. Machenil",
"M. Vanderhaeghen",
"J. Ryckebusch",
"M. Waroquier"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0370-2693(93)90650-7",
"journal_ref": "Phys.Lett. B316 (1993) 17-22",
"title": "Absorption mechanisms in photon induced two-body knockout",
"url": "https://arxiv.org/abs/nucl-th/9307002"
},
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