TheηNNcoupling constant

2000/02/29 by Shi-Lin Zhu · 26 citations
Physics and Astronomy · #Computer science #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1103/physrevc.61.065205

published in Physical Review C 61(6) (American Institute of Physics) · RevTex, two figures, discussions added, Phys. Rev. C (in press)

arxiv created 2000/04/10 · openalex publication_date 2000/05/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We derive the light cone QCD sum rule for the \ensuremathηNN coupling constant g_\ensuremathηNN. The contribution from the excited states and the continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta, p₁²,p₂²=(p\ensuremath-q)². Our result is \ensuremathα_\ensuremathηNN=(0.3\ifmmode±\else\textpm\fi0.15), which favors small values used in the literature.

Citations

• ωNNcouplings derived from QCD sum rules
• πNNandπNN(1535)couplings in QCD
• StrongρNNcoupling derived from QCD

Cited by

• ηproduction off the proton in a Regge-plus-chiral quark approach
• Relativistic description of thenp→ηdreaction near threshold