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Determination of the neutron-neutron scattering length from incomplete neutron-deuteron breakup experiments

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
318
Issue
2
Identifiers
DOI: 10.1016/0370-2693(93)90129-6

Abstract

Abstract We present results of the first analysis of published proton spectra from the incomplete neutron-deuteron breakup reaction using a realistic nucleon-nucleon potential (Bonn B) in rigorous three-nucleon Faddeev calculations. Our results for the 1S 0 neutron-neutron scattering length α nn are considerably less negative than values obtained from the same data in earlier analyses based on simplified nucleon-nucleon interactions. In contrast with the previous determinations, the present values for α nn are in clear disagreement with the result for α nn extracted from φ −d experiments.

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