Calculation of multichannel reactions in the four-nucleon system above breakup threshold
Abstract
Exact four-body equations of Alt, Grassberger and Sandhas are solved for neutron-3He and proton-3H scattering in the energy regime above the four-nucleon breakup threshold. Cross sections and spin observables for elastic, transfer, charge-exchange, and breakup reactions are calculated using realistic nucleon-nucleon interaction models, including the one with effective many-nucleon forces due to explicit -isobar excitation. The experimental data are described reasonably well with only few exceptions such as vector analyzing powers.
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