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pd capture processes at various energies have been analyzed based on solutions of 3N-Faddeev equations and using modern NN forces. The application of the Siegert theorem is compared to the explicit use of $pi$- and $rho$-like exchange currents connected to the AV18 NN interaction. Overall good agreement with cross sections and spin observables has been obtained but leaving room for improvement in some cases. Feasibility studies for 3NFs consistently included in the 3N continuum and the 3N bound state have been performed as well.
The astrophysical $S$-factor for the radiative capture $d(p,gamma)^3$He in the energy-range of interest for Big Bang Nucleosynthesis (BBN) is calculated using an {it ab-initio} approach. The nuclear Hamiltonian retains both two- and three-nucleon int
A short overview of motivations and successes of two-body exchange currents between constituent quarks for electromagnetic hadron observables like charge radii, magnetic and quadrupole moments is given. We then predict and analyze exchange current ef
Chiral effective field theory (ChEFT) is a modern framework to analyze the properties of few-nucleon systems at low energies. It is based on the most general effective Lagrangian for pions and nucleons consistent with the chiral symmetry of QCD. For
We consider two basic nuclear reactions: Radiative capture of neutrons by protons, $n+pto gamma+~d$ and its time-reversed counterpart, photodisintegration of the deuteron, $gamma +dto n+p$. In both of these cases we assume that the incoming beam of n
We extend our approach to incorporate the proton-proton (pp) Coulomb force into the three-nucleon (3N) momentum-space Faddeev calculations of elastic proton-deuteron (pd) scattering and breakup to the case when also a three-nucleon force (3NF) is act