Accurate nucleon-nucleon potential with charge-independence breaking
R. B. WiringaPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439V. G. J. StoksPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439R. SchiavillaPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439
1995en
ABI
Abstract
We present a new high-quality nucleon-nucleon potential with explicit charge dependence and charge asymmetry, which we designate Argonne ${\mathit{v}}_{18}$. The model has a charge-independent part with 14 operator components that is an updated version of the Argonne ${\mathit{v}}_{14}$ potential. Three additional charge-dependent and one charge-asymmetric operators are added, along with a complete electromagnetic interaction. The potential has been fit directly to the Nijmegen pp and np scattering database, low-energy nn scattering parameters, and deuteron binding energy. With 40 adjustable parameters it gives a ${\mathrm{\ensuremath{\chi}}}^{2}$ per datum of 1.09 for 4301 pp and np data in the range 0--350 MeV.
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Cited by 40 references