Pion Nucleon Vertex Function and the One Pion Exchange Potential
Sep, 197513 pages
Published in:
- Nucl.Phys.B 104 (1976) 98-110
- Published: 1976
Report number:
- IPNO/TH 75-30
Citations per year
Abstract: (Elsevier)
We calculate the πNN vertex function from field theory and dispersion relations. It contains no adjustable parameters, the only input being S- and P- waves for ππ → N N . Our vertex function, having an effective cut-off mass of 5μ and an rms radius of 0.52 fm, compares well with previous experimental determinations. We find negligible effects from the 3π dressing of the π propagator. The corrected OPEP is significantly different from the uncorrected OPEP for r < 1.5 fm. The inclusion of the corrected OPEP in meson exchange potentials will improve agreement with phenomenology.- VERTEX FUNCTION: PI NUCLEON NUCLEON
- EXCHANGE: ONE-PION
- EXCHANGE: POTENTIAL
- FIELD THEORY
- DISPERSION RELATION
- PARTIAL WAVE
- PI PI: INTERACTION
- INTERACTION: PI PI
- NUCLEON: FINAL STATE
- FINAL STATE: NUCLEON
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