16–21 Sept 2013
Natal, Brazil
Brazil/East timezone
Registration open

Phenomenology of MaVaN's Models in Reactor and Solar Neutrino Data

Not scheduled
22m
Natal, Brazil

Natal, Brazil

Natal, Brazil
poster Working Group 2

Speaker

Pedro Holanda (U)

Description

Mass Varying Neutrinos (MaVaN's) mechanisms were proposed to link the neutrino mass scale with the dark energy density, addressing the coincidence problem. In some scenarios this mass can present a dependence on the baryonic density felt by neutrinos, creating an effective neutrino mass that depends both on the neutrino and baryonic densities. In this work we study the phenomenological consequence of MaVaN's scenarios in which the matter density dependence is induced by Yukawa interactions of a light neutral scalar particle which couples to neutrinos and matter. Under the assumption of one mass scale dominance, we perform an analysis of KamLAND neutrino data which depends on 4 parameters: the two standard oscillation parameters, $\Delta m^{2}_{0,21}$ and $tan^{2}\theta_{12}$, and two new coefficients which parameterize the environment dependence of neutrino mass. We found a region in parameter space where the effect is of first order compared with the usual mass-induced oscillation. We analyse this new region in the light of solar neutrino data.

Primary author

Co-author

Mateus Carneiro (Estate University of Campinas)

Presentation materials

There are no materials yet.