Speaker
Description
A rigorous few-body scattering theory as proposed by Faddeev and extended by Yakubovsky and Alt, Grassberger and Sandhas is implemented in the momentum-space framework. Past applications include the nucleon-deuteron scattering, three-cluster nuclear reactions, and four-nucleon scattering. Recent and ongoing extensions of this framework will be presented.
First, we made a two-fold extension of the standard dynamics by developing a new nonlocal form of optical potentials and simultaneously including the excitation of the nuclear core. Example results for nucleon transfer reactions (d,p) and (p,d) and deuteron inelastic scattering (d,d')
10Be and 24Mg nuclei demonstrate a good reproduction of the experimental data and an improved consistency between the two-body (elastic and inelastic nucleon-nucleus scattering) and three-body description [1,2].
Second, the four-nucleon scattering is extended to higher energies. Exact four-body calculations are compared with those based on microscopic optical potential with no-core shell model densities, allowing to evaluate the the reliability of the optical potential method [3].
Third, reactions in hypernuclear three-body systems are described fully including the coupling between the nucleon-Lambda and nucleon-Sigma(+,0,-) states, which a highly complicated problem with many thresholds. Various elastic and inelastic cross sections are studied [4].
- A. Deltuva, D. Jurčiukonis, Physics Letters B 840, 137867 (2023).
- A. Deltuva, D. Jurčiukonis, Phys. Rev. C 107, 064602 (2023).
- A. Deltuva et al., in preparation.
- A. Deltuva et al., in preparation.
