Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-04-24
Int.J.Mod.Phys.E16:81-96,2007
Physics
Nuclear Physics
Nuclear Theory
17 pages, 5 figures, 1 table
Scientific paper
10.1142/S0218301307005624
We address an actual problem of baryon-resonance dominated meson-exchange processes in the low GeV regime, i.e. the phase and the structure of meson-NN* transition vertices. Our starting point is a quark-diquark model for the baryons (obeying approximate covariance; the mesons are kept as elementary objects), together with the relative phases for the NN vertices, as determined from low energy NN scattering. From the explicit representation of the N and N* baryons, we exemplify the derivation of the coupling constants and form factors of the NN*(1535,1/2-)transition vertices for pseudo-scalar, scalar and vector mesons.
Dillig Manfred
Luetz E. F.
Marranghello Guilherme F.
Rocha S. S.
Vasconcellos Cesar A. Z.
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