204 citations · 723 across the 37 of their papers we have counts for
11 papers · 1 filter
Isospin breaking from diquark clustering
W. R. Gibbs, Jean-Pierre Dedonder
Although SU(2) isospin symmetry is generally assumed in the basic theory of the strong interaction, a number of significant violations have been observed in scattering and bound st…
Baryonium, a common ground for atomic and high energy physics
S. Wycech, J. P. Dedonder, B. Loiseau
Indications of the existence of quasi-bound states in the N-Nbar system are presented. Measurements by BES discovered a broad enhancement close to the p-pbar threshold in the S wav…
Search for baryonium and the physics at FAIR
Slawomir Wycech, Jean-Pierre Dedonder, Benoit Loiseau
The existence of nucleon-antinucleon quasi-bound state is indicated in two decay modes of the J/psi meson studied by BES. We discuss an explanation in a fairly traditional Paris-po…
Monte Carlo Eikonal Scattering
W. R. Gibbs, Jean-Pierre Dedonder
Monte Carlo evaluation is used to calculate heavy-ion elastic scattering including the center-of-mass correction and the Coulomb interaction.Angular distributions are presented for…
On the structure of the X(1835) baryonium
J. -P. Dedonder, B. Loiseau, B. El-Bennich +1
The measurement by the BES collaboration of J/psi -> gamma p pbar decays indicates an enhancement at the p-pbar threshold. In another experiment BES finds a peak in the invariant m…
Phase Variation of Hadronic Amplitudes
J. P. Dedonder, W. R. Gibbs, Mutazz Nuseirat
The phase variation with angle of hadronic amplitudes is studied with a view to understanding the underlying physical quantities which control it and how well it can be determined…
Pion Charge Exchange on Deuterium
J. -P. Dedonder, W. R. Gibbs
We investigate quantum corrections to a classical intranuclear cascade simulation of pion single charge exchange on the deuteron. In order to separate various effects the orders of…
On the relationship of the scaled phase space and Skyrme-coherent state treatments of proton antiproton annihilation at rest
R. D. Amado, F. Cannata, J-P. Dedonder +3
We discuss pion multiplicities and single pion momentum spectra from proton antiproton annihilation at rest. Both the scaled phase space model and the Skyrme-coherent state approac…
Isospin Recoupling and Bose-Einstein Pion Correlations in Nucleon-Antinucleon Annihilations
R. D. Amado, F. Cannata, J-P. Dedonder +2
We study the effect of isospin projections on a two source picture of coherent pions coming from nucleon-antinucleon annihilation. We show that important Hanbury-Brown Twiss correl…
Coherent Pion Radiation From Nucleon Antinucleon Annihilation
R. D. Amado, F. Cannata, J. -P. Dedonder +2
A unified picture of nucleon antinucleon annihilation into pions emerges from a classical description of the pion wave produced in annihilation and the subsequent quantization of t…
Quartets of superdeformed bands and supersymmetry breaking
R. D. Amado, R. Bijker, F. Cannata +2
We examine the prediction of supersymmetric quantum mechanics that bands with identical gamma-ray energies occur in quartets. The experimental data suggest that this scenario is ac…