Extended-soft-core baryon-baryon model. I. Nucleon-nucleon scattering with the ESC04 interaction
SourcePhysical Review C. Nuclear Physics, 73, 4, (2006), pp. 44007-044007-16
Article / Letter to editor
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Theoretical High Energy Physics
Physical Review C. Nuclear Physics
SubjectTheoretical High Energy Physics
The NN results are presented from the extended-soft-core (ESC) interactions. They consist of local and nonlocal potentials due to (i) one-boson-exchanges (OBE), which are the members of nonets of pseudoscalar, vector, scalar, and axial mesons, (ii) diffractive exchanges, (iii) two-pseudoscalar exchanges (PS-PS), and (iv) meson-pair exchanges (MPE). We describe a fit to the pp and np data for 0≤T<SUB>lab</SUB>≤350 MeV, having a typical chi<SUP>2</SUP>/N<SUB>data</SUB>=1.155. Here, we used �20 quasi-free physical parameters, which are coupling constants and cutoff masses. A remarkable feature of the couplings is that we were able to require them to follow rather closely the pattern predicted by the <SUP>3</SUP>P<SUB>0</SUB> quark-pair-creation (QPC) model. As a result the 11 OBE couplings are rather constrained, i.e., quasi free. Also, the deuteron binding energy and the several NN scattering lengths are fitted.
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