The Momentum Dependence of the $ρ-ω$ Mixing Amplitude in a Hadronic Model
| dc.creator | Piekarewicz, J. | |
| dc.creator | Williams, A. G. | |
| dc.date | 1993-01-04 | |
| dc.date.accessioned | 2026-07-07T11:14:55Z | |
| dc.date.available | 2026-07-07T11:14:55Z | |
| dc.description | We calculate the momentum dependence of the $ρ-ω$ mixing amplitude in a purely hadronic model. The basic assumption of the model is that the mixing amplitude is generated by $N{\bar{N}}$ loops and thus driven entirely by the neutron-proton mass difference. The value of the amplitude at the $ω$-meson point is expressed in terms of only the $NNω$ and the $NNρ$ coupling constants. Using values for these couplings constrained by empirical two-nucleon data we obtain a value for the mixing amplitude in agreement with experiment. Extending these results to the spacelike region, we find a $ρ-ω$ contribution to the NN interaction that is strongly suppressed and opposite in sign relative to the conventional contribution obtained from using the constant on-shell value for the mixing amplitude. | |
| dc.description | 11 pages, SCRI-122192 | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9301002 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9301002 | |
| dc.identifier | Phys.Rev.C47:2462-2466,1993 | |
| dc.identifier | doi:10.1103/PhysRevC.47.R2462 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192235 | |
| dc.subject | Nuclear Theory | |
| dc.title | The Momentum Dependence of the $ρ-ω$ Mixing Amplitude in a Hadronic Model | |
| dc.type | text |