Low-energy p-d scattering and He-3 in pionless EFT

Details Low-energy p-d scattering and He-3 in pionless EFT Low-energy p-d scattering and He-3 in pionless EFT

2011-01-31

arxiv.org/abs/1101.5939v3

Phys.Rev.C83:064001,2011

Physics

Nuclear Physics

Nuclear Theory

27 pages, 13 figures, typos corrected in Sec. V.A (trinucleon wave functions)

Scientific paper

10.1103/PhysRevC.83.064001

We calculate low-energy proton--deuteron scattering in the framework of pionless effective field theory. In the quartet channel, we calculate the elastic scattering phase shift up to next-to-next-to-leading order in the power counting. In the doublet channel, we perform a next-to-leading order calculation. We obtain good agreement with the available phase shift analyses down to the scattering threshold. The phase shifts in the region of non-perturbative Coulomb interactions are calculated by using an optimised integration mesh. Moreover, the Coulomb contribution to the 3He-3H binding energy difference is evaluated in first order perturbation theory. We comment on the implications of our results for the power counting of subleading three-body forces.

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