dorsal/arxiv
View SchemaEffective field theory calculation of nd radiative capture at thermal energies
| Authors | H. Sadeghi, S. Bayegan, Harald W. Griesshammer |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0610029 |
| URL | https://arxiv.org/abs/nucl-th/0610029 |
| DOI | 10.1016/j.physletb.2006.10.023 |
| Journal | Phys.Lett. B643 (2006) 263-267 |
Abstract
The cross section for the thermal neutron capture by the deuteron is calculated with pionless Effective Field Theory(EFT). No new Three-Nucleon forces are needed up to next-to-next-to-leading order in order to achieve cut-off independent results, besides those fixed by the triton binding energy and Nd scattering length in the triton channel. The cross-section is accurately determined to be $\sigma_{tot}=[0.503\pm 0.003]mb$. At zero energies, the magnetic $M1$-transition gives the dominant contribution and is calculated up to next-to-next-to-leading order (N$^2$LO). Close agreement between the available experimental data and the calculated cross section is reached. We demonstrate convergence and cutoff independence order by order in the low-energy expansion.
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"abstract": "The cross section for the thermal neutron capture by the deuteron is\ncalculated with pionless Effective Field Theory(EFT). No new Three-Nucleon\nforces are needed up to next-to-next-to-leading order in order to achieve\ncut-off independent results, besides those fixed by the triton binding energy\nand Nd scattering length in the triton channel. The cross-section is accurately\ndetermined to be $\\sigma_{tot}=[0.503\\pm 0.003]mb$. At zero energies, the\nmagnetic $M1$-transition gives the dominant contribution and is calculated up\nto next-to-next-to-leading order (N$^2$LO). Close agreement between the\navailable experimental data and the calculated cross section is reached. We\ndemonstrate convergence and cutoff independence order by order in the\nlow-energy expansion.",
"arxiv_id": "nucl-th/0610029",
"authors": [
"H. Sadeghi",
"S. Bayegan",
"Harald W. Griesshammer"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.physletb.2006.10.023",
"journal_ref": "Phys.Lett. B643 (2006) 263-267",
"title": "Effective field theory calculation of nd radiative capture at thermal energies",
"url": "https://arxiv.org/abs/nucl-th/0610029"
},
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