Multi-gluon field approach of QCD
| dc.creator | Morsch, H. P. | |
| dc.creator | Zupranski, P. | |
| dc.date | 2007-10-26 | |
| dc.date.accessioned | 2026-07-07T11:53:49Z | |
| dc.date.available | 2026-07-07T11:53:49Z | |
| dc.description | The decay of 2-gluon colour singlets in quarks: 2g --> q-qbar +2q-2qbar has been simulated with the Monte-Carlo method, taking into account an effective 1-gluon exchange interaction between the emitted quarks, which was folded with a 2-gluon density determined self-consistently. 2-gluon densities were found with different radii, which correspond to 0^{++} glueballs of the size of light q-qbar, s-sbar, c-cbar, b-bbar, and heavier q-qbar systems. Binding potentials between the two gluons have been deduced, which are consistent with the confinement potential from lattice results. However, self-consistency for the deduction of 2-gluon densities requires massless (or very light) quarks for all flavours. The masses are given by the binding energies of quarks and gluons, yielding excitation spectra of 0^{++} glueballs and Phi, J/Psi, and Upsilon states consistent with observation. The sum of q-q potentials yields a strong coupling alpha_s consistent with the available data up to large momenta. The nucleon is described by a gluonium state coupled to 3 valence quarks, yielding ground state and radial excitations consistent with experiment. Finally, we discuss the compressibility of the nucleon and relate it to that of nuclear matter. | |
| dc.description | Talk presented at the XXX. Mazurian Lakes Conference, Sept. 2-9, 2007, Piaski, Poland | |
| dc.identifier | https://arxiv.org/abs/0710.5107 | |
| dc.identifier | http://arxiv.org/abs/0710.5107 | |
| dc.identifier | ActaPhys.Polon.B39:369-380,2008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204679 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Multi-gluon field approach of QCD | |
| dc.type | text |