Leptogenesis, $μ-τ$ Symmetry and $θ_{13}$
| dc.creator | Mohapatra, R. N. | |
| dc.creator | Nasri, S. | |
| dc.creator | Yu, Haibo | |
| dc.date | 2005-02-02 | |
| dc.date.accessioned | 2026-07-07T10:29:24Z | |
| dc.date.available | 2026-07-07T10:29:24Z | |
| dc.description | We show that in theories where neutrino masses arise from type I seesaw formula with three right handed neutrinos and where large atmospheric mixing angle owes its origin to an approximate leptonic $μ-τ$ interchange symmetry, the primordial lepton asymmetry of the Universe, $ε_l$ can be expressed in a simple form in terms of low energy neutrino oscillation parameters as $ε_l = (a Δm^2_\odot+ b Δm^2_A θ^2_{13})$, where $a$ and $b$ are parameters characterizing high scale physics and are each of order $\leq 10^{-2} $ eV$^{-2}$. We also find that for the case of two right handed neutrinos, $ε_l \propto θ^2_{13}$ as a result of which, the observed value of baryon to photon ratio implies a lower limit on $θ_{13}$. For specific choices of the CP phase $δ$ we find $θ_{13}$ is predicted to be between $0.10-0.15$. | |
| dc.description | 16 pages, one figure | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0502026 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0502026 | |
| dc.identifier | Phys.Lett.B615:231-239,2005 | |
| dc.identifier | doi:10.1016/j.physletb.2005.03.082 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177790 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Leptogenesis, $μ-τ$ Symmetry and $θ_{13}$ | |
| dc.type | text |