arXiv:1410.0756·v3·Nuclear Theory
Low-energy neutron-deuteron reactions with N3LO chiral forces
J. Golak · R. Skibinski · K. Topolnicki · H. Witala · E. Epelbaum · H. Krebs · H. Kamada · Ulf-G. Meißner · V. Bernard · P. Maris · J. Vary · S. Binder
Abstract
We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-to-leading order in the chiral expansion. In this first investigation we include only matrix elements of the three-nucleon force for partial waves with the total two-nucleon (three-nucleon) angular momenta up to 3 (5/2). Low-energy neutron-deuteron elastic scattering and deuteron breakup reaction are studied. Emphasis is put on Ay puzzle in elastic scattering and cross sections in symmetric-space-star and neutron-neutron quasi-free-scattering breakup configurations, for which large discrepancies between data and theory have been reported.
Comments: 22 pages, 7 figures