Bound state in the vector channel of the extended Nambu--Jona-Lasinio model at fixed f_π
| dc.creator | Dmitrašinović, V. | |
| dc.date | 1999-02-16 | |
| dc.date.accessioned | 2026-07-07T11:35:38Z | |
| dc.date.available | 2026-07-07T11:35:38Z | |
| dc.description | We show that, as a consequence of fixing f_π= 93 MeV: (1) a bound state pole in the J^P = 1^- scattering amplitude of the ENJL model exists for arbitrarily weak (positive) vector coupling G_2 so long as the constituent quark mass is sufficiently large; (2) there is a bound state for any quark mass when G_2 \geq 0.6/(8 f_π^2); (3) this bound state becomes massless at G_2 = 1/(8 f_π^2) and a tachyon for G_2 exceeding it. We show by way of an example that the model has no trouble fitting the ρmeson mass simultaneously with other observables. | |
| dc.description | 9 pages, 2 (eps) figures, to appear in PLB | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9902366 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9902366 | |
| dc.identifier | Phys.Lett.B451:170-174,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)00195-1 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198655 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Bound state in the vector channel of the extended Nambu--Jona-Lasinio model at fixed f_π | |
| dc.type | text |