Few nucleons scattering in pionless effective field theory

Abstract

We present a comprehensive theoretical study of low-energy few nucleon scattering for systems with $A\le 4$. 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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Cited by in corpus (6)

• Five-body calculation of $s$-wave $n$-${}^4$He scattering at next-to-leading order pionless effective field theory
• Few-Nucleon Systems within Finite-Cutoff Pionless EFT
• The Four-Boson First-Excited State Near Two-Body Unitarity
• Perturbative application of next-to-leading order pionless EFT for $A\le 3$ nuclei in a finite volume
• Two-Body Triton Photodisintegration and Wigner-SU(4) Symmetry
• Improved Actions for Nuclear Effective Field Theories