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8 papers · 2 filters
Soft Pomeron and Lower-Trajectory Intercepts
J. R. Cudell, V. V. Ezhela, K. Kang +2
We present a preliminary report on the determination of the intercepts and couplings of the soft pomeron and of the rho/omega and f/a trajectories from the largest data set availab…
Important configurations for NN processes in a Goldstone boson exchange model
D. Bartz, Fl. Stancu
We study the short-range nucleon-nucleon interaction in a nonrelativistic chiral constituent quark model by diagonalizing a Hamiltonian containing a linear confinement and a Goldst…
The running QCD coupling in the pre-asymptotic region
G. Burgio, F. Di Renzo, C. Parrinello +1
We study deviations from the perturbative asymptotic behaviour in the running QCD coupling by analysing non-perturbative measurements of alpha_s (p) at low momenta as obtained from…
Scalar meson exchange and the baryon spectra
P. Stassart, Fl. Stancu, J. -M. Richard
We explore the role of a scalar meson exchange interaction between quarks in a semirelativistic constituent quark model where the quarks are subject to a linear confinement. We sea…
Multiquark states in a Goldstone boson exchange model
Fl. Stancu
We discuss the stability of multiquark systems containing heavy flavours. We show that the Goldstone boson exchange (GBE) model gives results at variance with the one-gluon-exchang…
Fermi Motion and Quark Off-Shellness in Elastic Vector-Meson Production
I. Royen, J. R. Cudell
We study ways of implementing Fermi momentum in elastic vector-meson production, and find that the usual on-shell assumption of quark models and quark wave functions cannot reprodu…