Implications of Leptonic Unitarity Violation at Neutrino Telescopes
| dc.creator | Xing, Zhi-zhong | |
| dc.creator | Zhou, Shun | |
| dc.date | 2008-04-22 | |
| dc.date | 2008-07-04 | |
| dc.date.accessioned | 2026-07-07T11:50:06Z | |
| dc.date.available | 2026-07-07T11:50:06Z | |
| dc.description | A measurement of the ultrahigh-energy (UHE) cosmic neutrinos at a km^3-size neutrino telescope will open a new window to constrain the 3 x 3 neutrino mixing matrix V and probe possible new physics. We point out that it is in principle possible to examine the non-unitarity of V, which is naturally expected in a class of seesaw models with one or more TeV-scale Majorana neutrinos, by using neutrino telescopes. Considering the UHE neutrinos produced from the decays of charged pions arising from proton-proton and (or) proton-gamma collisions at a distant astrophysical source, we show that their flavor ratios at a terrestrial neutrino telescope may deviate from the democratic flavor distribution ϕ^T_e : ϕ^T_μ: ϕ^T_τ= 1 : 1 : 1 due to the seesaw-induced unitarity violation of V. Its effect can be as large as several percent and can serve for an illustration of how sensitive a neutrino telescope should be to this kind of new physics. | |
| dc.description | 12 pages, 2 PS figures, accepted for publication in Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/0804.3512 | |
| dc.identifier | http://arxiv.org/abs/0804.3512 | |
| dc.identifier | Phys.Lett.B666:166-172,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.07.011 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203457 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Implications of Leptonic Unitarity Violation at Neutrino Telescopes | |
| dc.type | text |