Effective Range in Doublet S-wave Neutron-Deuteron Scattering

Details Effective Range in Doublet S-wave Neutron-Deuteron Scattering Effective Range in Doublet S-wave Neutron-Deuteron Scattering

2001-04-30

arxiv.org/abs/nucl-th/0104088v1

Physics

Nuclear Physics

Nuclear Theory

8 pages, LaTeX, 4 figures, uses epsfig.sty, feynmp.sty (necessary Metapost files included)

Scientific paper

The effective field theory approach is applied to the three-nucleon process of $S=1/2$ neutron-deuteron scattering in the S-wave, including the effective range parameters summed at all orders. This is achieved through a modification of the power counting, following a recent suggestion in the literature. It is shown that with this procedure, while the convergence of the loop integrals improves, one cannot meaningfully include a three-body effective term to describe low-energy data affected by the presence of the triton bound state.

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