Abstract
Comprehensive and high-accuracy elastic scattering analyzing power angular distributions were obtained at five incident neutron energies between 1.60 and 5.54 MeV. The data are compared to rigorous four-nucleon calculations using high-precision nucleon-nucleon potential models; three-nucleon force effects are found to be very small. The agreement between data and calculations is fair at the lower energies and becomes less satisfactory with increasing neutron energy. Comparison to scattering over the same energy range exhibits unexpectedly large isospin effects.
- Received 8 December 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.152503
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