Determination of the 3Pj Phase Shifts from Nucleon-Nucleon Data: A Critical Evaluation and a Surprising Result
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It is shown that the \(\) neutron-proton (proton-proton) phase shifts cannot be determined to less than \(\)% (\(\)%) uncertainty at low energies (\(\) MeV), even if high-accuracy nucleon-nucleon data were to become available for currently inaccessible observables. For a more accurate determination, appropriate theoretical constraints have to be invoked, but their accuracy can be judged only from the comparison of rigorous three-nucleon continuum calculations with particular three-nucleon observables.
KeywordsCritical Evaluation Surprising Result
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