Phenomenology of MaVaN's models in reactor neutrino data

M. F. Carneiro and P. C. de Holanda

Phenomenology of MaVaN's models in reactor neutrino data

M. F. Carneiro and P. C. de Holanda

Material

ARTIGO

Idioma

Inglês

Nota geral

Agradecimentos: The authors would like to thank Daniel Boriero for his valuable and constructive suggestions during the planning and development of this paper. They also thank CNPq and CAPES for several financial supports

Resumo Abstract: 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... Ver mais Abstract: 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(0,21)(2) and tan (2)theta(12), and two new coefficients which parameterize the environment dependence of neutrino mass. We introduce an Earth's crust model to compute precisely the density in each point along the neutrino trajectory. We show that this new description of density does not affect the analysis with the standard model case. With the MaVaN model, we observe a first order effect in lower density, which leads to an improvement on the data description Ver menos

Nota de informação sobre financiamento

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

Direito de acesso

Aberto

Assuntos

Neutrinos de reatores

Neutrinos de massa variável

Energia escura (Astronomia)

Artigo de pesquisa

Autoria

Carneiro, Mateus Fernandes, 1988- Autor