The n-(3)H and p-(3)He elastic phase shifts below the trinucleon disintegration thresholds are calculated by solving the four-nucleon problem with three different realistic nucleon-nucleon interactions (the I-N3LO model by Entem and Machleidt, the Argonne v(18) potential model, and a low-k model derived from the CD-Bonn potential). Three different methods-Alt-Grassberger-Sandhas, hyperspherical harmonics, and Faddeev-Yakubovsky-have been used and their respective results are compared. For both n-(3)H and p-(3)He we observe a rather good agreement between the three different theoretical methods. We also compare the theoretical predictions with the available experimental data, confirming the large underprediction of the p-(3)He analyzing power.
|Autori:||Viviani M; Deltuva A; Lazauskas R; Carbonell J; Fonseca AC; Kievsky A; Marcucci L; Rosati S|
|Titolo:||Benchmark calculation of n-(3)H and p-(3)He scattering|
|Anno del prodotto:||2011|
|Digital Object Identifier (DOI):||10.1103/PhysRevC.84.054010|
|Appare nelle tipologie:||1.1 Articolo in rivista|