title: Three- and four-nucleon systems from chiral effective field theory.
abstract: Recently developed chiral nucleon-nucleon (NN) forces at next-to-leading order (NLO), that describe NN phase shifts up to about 100 MeV fairly well, have been applied to 3N and 4N systems. Faddeev-Yakubovsky equations have been solved rigorously. The resulting 3N and 4N binding energies are in the same range as found using standard NN potentials. In addition, low-energy 3N scattering observables are very well reproduced as for standard NN forces. The long-standing A(y) puzzle is absent at NLO. The cutoff dependence of the scattering observables is rather weak.
authors.affiliation: Forschungszentrum Jülich, Institut für Kernphysik (Theorie), D-52425 Jülich, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Epelbaum
authors.forename: H
authors.initials: H
authors.lastname: Kamada
authors.forename: A
authors.initials: A
authors.lastname: Nogga
authors.forename: H
authors.initials: H
authors.lastname: Witala
authors.forename: W
authors.initials: W
authors.lastname: Glöckle
authors.forename: U G
authors.initials: UG
authors.lastname: Meissner