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.
Benchmark calculation of n-(3)H and p-(3)He scattering
MARCUCCI, LAURA ELISA;
2011-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
