Study of the electroweak processes in the two and three-nucleon systems with local chiral forces

Abstract

Deuteron photodisintegration, three-body photodisintegration of 3 He as well as muon capture on the deuteron and 3 He are theoretically analyzed by means of improved chiral nucleon-nucleon interactions. To this end we solve the Schrödinger and Faddeev equations in the momentum space. While our electromagnetic current operator implicitly receives implicitly many-body contributions via the Siegert theorem, the weak current is taken in the form of the nonrelativistic single nucleon current supplemented by the dominant relativistic corrections. Such models of the current operators and the wave functions generated with the new chiral potentials lead to reasonable predictions for the cross sections and capture rates studied in this contribution. Our results show very welcome features of the new forces and prove their usefulness in studies of electroweak processes with few nucleons.