Astrophysical S-factor of the direct alpha(d,gamma)6Li capture reaction in a three-body model

At the long-wavelength approximation, electric dipole transitions are forbidden between isospin-zero states. In an (formula presented) model with (formula presented) contributions, the (formula presented)Li astrophysical S-factor is in agreement with the experimental data of the LUNA collaboration, without adjustable parameter. The exact-masses prescription used to avoid the disappearance of E1 transitions in potential models is not founded at the microscopic level.SCOPUS: cp.p