dorsal/arxiv
View SchemaLow- and intermediate-energy nucleon-nucleon interactions and the analysis of deuteron photodisintegration within the dispersion relation technique
| Authors | A. V. Anisovich, V. A. Sadovnikova |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9912030 |
| URL | https://arxiv.org/abs/nucl-th/9912030 |
| DOI | 10.1007/s100500050109 |
| Journal | Eur.Phys.J. A2 (1998) 199-221 |
Abstract
The nucleon-nucleon interaction in the region of the nucleon kinetic energy up to 1000 MeV is analysed together with the reaction $\gamma d \to pn$ in the photon energy range $E_{\gamma}=0-400$ MeV. Nine nucleon-nucleon $s$-channel partial amplitudes are reconstructed in the dispersion relation $N/D$ method: $^1S_0$, $^3S_1-^3D_1$, $^3P_0$, $^1P_1$, $^3P_1$, $^3P_2$, $^1D_2$, $^3D_2$ and $^3F_3$. Correspondingly, the dispersive representation of partial amplitudes $N\Delta \to pn$, $NN^* \to pn$ and $NN\pi \to pn$ is given. Basing on that, we have performed parameter-free calculation of the amplitude $\gamma d \to pn$, taking into account: $(i)$ pole diagram, $(ii)$ nucleon-nucleon final-state rescattering $\gamma d \to pn \to pn$, and $(iii)$ inelastic final-state rescatterings $\gamma d \to N\Delta(1232) \to pn$, $\gamma d \to NN^*(1400) \to pn$ and $\gamma d \to NN\pi \to pn$. The $\gamma d \to pn$ partial amplitudes for nine above-mentioned channels are found. It is shown that the process $\gamma d \to pn \to pn$ is significant for the waves $^1S_0$, $^3P_0$, $^3P_1$, at $E_{\gamma} =50 -100$ MeV, while $\gamma d \to N\Delta \to pn$ for the waves $^3P_2$, $^1D_2$,$^3F_3$ dominates at $E_{\gamma} > 300$ MeV. Meson exchange current contributions into the deuteron disintegration are estimated: they are significant at $E_\gamma =100-400$ MeV.
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"abstract": "The nucleon-nucleon interaction in the region of the nucleon kinetic energy\nup to 1000 MeV is analysed together with the reaction $\\gamma d \\to pn$ in the\nphoton energy range $E_{\\gamma}=0-400$ MeV. Nine nucleon-nucleon $s$-channel\npartial amplitudes are reconstructed in the dispersion relation $N/D$ method:\n$^1S_0$, $^3S_1-^3D_1$, $^3P_0$, $^1P_1$, $^3P_1$, $^3P_2$, $^1D_2$, $^3D_2$\nand $^3F_3$. Correspondingly, the dispersive representation of partial\namplitudes $N\\Delta \\to pn$, $NN^* \\to pn$ and $NN\\pi \\to pn$ is given. Basing\non that, we have performed parameter-free calculation of the amplitude $\\gamma\nd \\to pn$, taking into account: $(i)$ pole diagram, $(ii)$ nucleon-nucleon\nfinal-state rescattering $\\gamma d \\to pn \\to pn$, and $(iii)$ inelastic\nfinal-state rescatterings $\\gamma d \\to N\\Delta(1232) \\to pn$, $\\gamma d \\to\nNN^*(1400) \\to pn$ and $\\gamma d \\to NN\\pi \\to pn$. The $\\gamma d \\to pn$\npartial amplitudes for nine above-mentioned channels are found. It is shown\nthat the process $\\gamma d \\to pn \\to pn$ is significant for the waves $^1S_0$,\n$^3P_0$, $^3P_1$, at $E_{\\gamma} =50 -100$ MeV, while $\\gamma d \\to N\\Delta \\to\npn$ for the waves $^3P_2$, $^1D_2$,$^3F_3$ dominates at $E_{\\gamma} \u003e 300$ MeV.\nMeson exchange current contributions into the deuteron disintegration are\nestimated: they are significant at $E_\\gamma =100-400$ MeV.",
"arxiv_id": "nucl-th/9912030",
"authors": [
"A. V. Anisovich",
"V. A. Sadovnikova"
],
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"doi": "10.1007/s100500050109",
"journal_ref": "Eur.Phys.J. A2 (1998) 199-221",
"title": "Low- and intermediate-energy nucleon-nucleon interactions and the analysis of deuteron photodisintegration within the dispersion relation technique",
"url": "https://arxiv.org/abs/nucl-th/9912030"
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