Bounding the Number of Light Neutrinos Species in a Left-Right Symmetric Model
| dc.creator | Gutierrez-Rodriguez, A. | |
| dc.creator | Hernandez-Ruiz, M. A. | |
| dc.creator | Perez, M. A. | |
| dc.creator | Perez-Vargas, F. | |
| dc.date | 2007-02-07 | |
| dc.date | 2007-04-08 | |
| dc.date.accessioned | 2026-07-07T07:55:30Z | |
| dc.date.available | 2026-07-07T07:55:30Z | |
| dc.description | Using the experimental values for the rates $R^{LEP} _{exp}=Γ_{inv}/Γ_{l\bar l}=5.942\pm 0.016$, $R^{Giga-Z_1}=Γ_{inv}/Γ_{l\bar l}=5.942\pm 0.012$ (most conservative) and $R^{Giga-Z_1}=Γ_{inv}/Γ_{l\bar l}=5.942\pm 0.006$ (most optimistic) we derive constraints on the number of neutrinos light species $(N_ν)_{LRSM}$ with the invisible width method in the framework of a left-right symmetric model (LRSM) as a function of the LR mixing angle $ϕ$. Using the LEP result for $N_ν$ we may place a bound on this angle, $-1.6\times 10^{-3}\leqϕ\leq 1.1\times 10^{-3}$, which is stronger than those obtained in previous studies of the LRSM. | |
| dc.description | 8 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0702076 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0702076 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126988 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Bounding the Number of Light Neutrinos Species in a Left-Right Symmetric Model | |
| dc.type | text |