Couplings of the Rho Meson in a Holographic dual of QCD with Regge Trajectories
| dc.creator | Huang, Tao | |
| dc.creator | Zuo, Fen | |
| dc.date | 2007-08-07 | |
| dc.date.accessioned | 2026-07-07T11:41:44Z | |
| dc.date.available | 2026-07-07T11:41:44Z | |
| dc.description | The couplings $g_{ρHH}$ of the $ρ$ meson with any hadron H are calculated in a holographic dual of QCD where the Regge trajectories for mesons are manifest. The resulting couplings grow linearly with the exciting number of H, thus are far from universal. A simple argument has been given for this behavior based on quasi-classical picture of excited hadrons. It seems that in holographic duals with exact Regge trajectories the $g_{ρHH}$ universality should be violated. The $ρ$-dominance for the electromagnetic form factors of H are also strongly violated, except for the lowest state, the pion. Quite unexpected, the form factor of the pion is completely saturated by the contribution of the $ρ$. The asymptotic behavior of the form factors are also calculated, and are found to be perfectly accordant with the prediction of conformal symmetry and pertubative QCD. | |
| dc.description | 9 pages | |
| dc.identifier | https://arxiv.org/abs/0708.0936 | |
| dc.identifier | http://arxiv.org/abs/0708.0936 | |
| dc.identifier | Eur.Phys.J.C56:75-80,2008 | |
| dc.identifier | doi:10.1140/epjc/s10052-008-0642-2 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200639 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Couplings of the Rho Meson in a Holographic dual of QCD with Regge Trajectories | |
| dc.type | text |