Nucleon-deuteron capture with chiral potentials

Details Nucleon-deuteron capture with chiral potentials Nucleon-deuteron capture with chiral potentials

2006-06-14

arxiv.org/abs/nucl-th/0606021v1

Acta Phys.Polon. B37 (2006) 2905-2918

Physics

Nuclear Physics

Nuclear Theory

20 pages, 12 ps figures

Scientific paper

Present day chiral nucleon-nucleon potentials up to N3LO and three nucleon forces at N2LO are used to analyze nucleon-deuteron radiative capture at deuteron lab energies below E_d= 100 MeV. The differential cross section and the deuteron analyzing powers A_y(d) and A_{yy} are presented and compared to data. The theoretical predictions are obtained in the momentum-space Faddeev approach using the nuclear electromagnetic current operator with exchange currents introduced via the Siegert theorem. The chiral forces provide the same quality of data description as a combination of the two-nucleon AV18 and the three-nucleon Urbana IX interactions. However, the different parametrizations of the chiral potentials lead to broad bands of predictions.

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