Few nucleons scattering in pionless effective field theory
- Resource Type
- Working Paper
- Authors
- Schäfer, Martin; Bazak, Betzalel
- Source
- Phys. Rev. C 107, 064001 (2023)
- Subject
- Nuclear Theory
- Language
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.