Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-06-08
Phys.Rev.C77:014002,2008
Physics
Nuclear Physics
Nuclear Theory
16 pages, 11 figures
Scientific paper
10.1103/PhysRevC.77.014002
The leading-order nucleon-nucleon (NN) potential derived from chiral perturbation theory consists of one-pion exchange plus a short-distance contact interaction. We show that in the 1S0 and 3S1-3D1 channels renormalization of the Lippmann-Schwinger equation for this potential can be achieved by performing one subtraction. This subtraction requires as its only input knowledge of the NN scattering lengths. This procedure leads to a set of integral equations for the partial-wave NN t-matrix which give cutoff-independent results for the corresponding NN phase shifts. This reformulation of the NN scattering equation offers practical advantages, because only observable quantities appear in the integral equation. The scattering equation may then be analytically continued to negative energies, where information on bound-state energies and wave functions can be extracted.
Elster Ch.
Phillips Daniel R.
Yang Chieh-Jen
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