Abstract
The -H and -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 potential model, and a low- 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 -H and -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 -He analyzing power.
2 More- Received 16 September 2011
DOI:https://doi.org/10.1103/PhysRevC.84.054010
©2011 American Physical Society