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arXiv · 2208.10960

Few nucleons scattering in pionless effective field theory

Martin Schäfer·Betzalel Bazak
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Abstract

We present a comprehensive theoretical study of low-energy few nucleon scattering for systems with $A\leq 4$. To this end, we utilize pionless effective field theory, which we employ at next-to-leading order. We show that at this level the theory yields accurate predictions for the low-energy scattering parameters in all studied channels. These predictions are on par with the best experimental evaluations and the available theoretical calculations. We confirm the recent observation that a four-body force is needed at next-to-leading-order and find that for nuclear systems it only appears in a single spin-isospin channel.

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Martin Schäfer, Betzalel Bazak. 2022-08-23. Few nucleons scattering in pionless effective field theory. https://doi.org/10.1103/physrevc.107.064001

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