Quark-Model Baryon-Baryon Interaction Applied to the Neutron-Deuteron Scattering (III) Breakup Differential Cross Sections

TL;DR

This study uses a quark-model baryon-baryon interaction to analyze low-energy neutron-deuteron breakup cross sections, achieving good agreement with meson-exchange models but not resolving the space star anomaly.

Contribution

It applies an energy-independent quark-model interaction to neutron-deuteron scattering, providing insights into differential cross sections at energies up to 65 MeV.

Findings

Reproduces most breakup cross sections predicted by meson-exchange potentials.

Does not resolve the space star anomaly at 13 MeV.

Overestimates some cross sections at higher energies.

Abstract

The low-energy breakup differential cross sections of the neutron-deuteron (nd) scattering are studied by employing the energy-independent version of the quark-model baryon-baryon interaction fss2. This interaction reproduces almost all the breakup differential cross sections predicted by the meson-exchange potentials for the neutron incident energies $E_n \leq$ 65 MeV. The space star anomaly of 13 MeV nd scattering is not improved even in our model. Some overestimation of the breakup differential cross sections at $E_n$=22.7 - 65 MeV implies that systematic studies of various breakup configurations are necessary both experimentally and theoretically.