Calculations of Three-Nucleon Reactions
Few-body Systems(2013)
摘要
Faddeev calculations using the chiral three-nucleon force in next-to-next-to-next-to-leading-order show that this force is too weak to provide an explanation for the low-energy A y puzzle. The large discrepancy between data and theory for the neutron–neutron quasi-free-scattering cross section in low energy neutron–deuteron breakup requires a modification of the ^1S_0 neutron–neutron force. We discuss the consequences that a bound ^1S_0 state of two neutrons has on neutron–deuteron scattering observables. At higher energies we compare the solutions of the non-relativistic three-nucleon Faddeev equations with three-nucleon force included to the solutions of its Poincaré invariant version.
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关键词
Spin Observable,Breakup Cross Section,Outgoing Proton,Faddeev Calculation,Elastic Scatter Cross Section
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