Parity doubling from Weinberg sum rules
| dc.creator | Andrianov, A. A. | |
| dc.creator | Espriu, D. | |
| dc.date | 2008-03-28 | |
| dc.date.accessioned | 2026-07-07T12:33:36Z | |
| dc.date.available | 2026-07-07T12:33:36Z | |
| dc.description | We investigate the relation among slopes and intercepts of Regge trajectories for mesons of a given spin and different parities using large N_c arguments and the matching to perturbative QCD in the deep-Minkowski region. For spin-1 mesons of opposite parities we prove that: a) for large and increasing N_c, the scale Λ^{(V,A)} separating the resonance-dominated and the perturbative-saturated region in the channels V,A grows as \sqrt{N_c}; b) to satisfy the Weinberg sum rules the slopes of Regge trajectories for mesons of opposite parities must coincide; c) their intercepts may differ and their difference corresponds to the difference between Λ^V and Λ^A. Some arguments indicate that this difference should tend to zero as N_c\to\infty. | |
| dc.description | 4 pages | |
| dc.identifier | https://arxiv.org/abs/0803.4104 | |
| dc.identifier | http://arxiv.org/abs/0803.4104 | |
| dc.identifier | Phys.Lett.B671:275-279,2009 | |
| dc.identifier | doi:10.1016/j.physletb.2008.12.030 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/217181 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Parity doubling from Weinberg sum rules | |
| dc.type | text |