3 research outputs found
Non-Abelian family symmetries in Pati-Salam unification
We present a framework of underlying SU(3) x SU(3) family symmetries
consistent with Pati-Salam unification and discuss advantages that can justify
introducing multiple non-Abelian factors. Advantages include improved vacuum
alignment and increased predictivity. We explore in this framework deviations
from tri-bi-maximal neutrinos, such as relatively large theta13.Comment: 11 pages, final version for publication in JHE
SUSY Renormalization Group Effects in Ultra High Energy Neutrinos
We have explored the question of whether the renormalization group running of
the neutrino mixing parameters in the Minimal Supersymmetric Standard Model is
detectable with ultra-high energy neutrinos from active galactic nuclei (AGN).
We use as observables the ratios of neutrino fluxes produced at the AGN,
focusing on four different neutrino production models:
= (1:2:0), (0:1:0), (1:0:0), and (1:1:0).
The prospects for observing deviations experimentally are taken into
consideration, and we find out that it is necessary to impose a cut-off on the
transferred momentum of GeV. However, this condition,
together with the expected low value of the diffuse AGN neutrino flux, yields a
negligible event rate at a km-scale Cherenkov detector such as IceCube.Comment: 26 pages, 9 figures. Version accepted for publication in JHE