title: Realistic calculation of the 3He + p (hep) astrophysical factor.
abstract: The astrophysical factor for the proton weak capture on 3He is calculated with correlated hyperspherical harmonic wave functions corresponding to a realistic Hamiltonian consisting of the Argonne v(18) two-nucleon and Urbana-IX three-nucleon interactions. The nuclear weak current has vector and axial-vector components with one- and many-body terms. All possible transitions connecting any of the p 3He S- and P-wave channels to 4He are considered. The S factor at a p 3He center-of-mass energy of 10 keV is predicted to be 10. 1x10(-20) keV b, a factor of approximately 4.5 larger than the value adopted in the standard solar model. The P-wave transitions are found to contribute about 40% of the calculated S factor.
authors.affiliation: Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA.
authors.forename: L E
authors.initials: LE
authors.lastname: Marcucci
authors.forename: R
authors.initials: R
authors.lastname: Schiavilla
authors.forename: M
authors.initials: M
authors.lastname: Viviani
authors.forename: A
authors.initials: A
authors.lastname: Kievsky
authors.forename: S
authors.initials: S
authors.lastname: Rosati