Matter profile effect in a neutrino factory: Yet another correlation in the analysis on CP violation at a neutrino oscillation experiment

Abstract:

We investigate the effect induced by the variation of the density profile of the Earth's interior in a long baseline neutrino oscillation experiment. We show that there is a strong correlation between the average density value and the first Fourier coefficient of the matter profile function in the analyses on the oscillation probability. We also point out two facts: the most essential part of the matter profile is the first Fourier mode of the matter profile function, and the Earth models based on the study of the seismology include large uncertainty for the first Fourier mode. This means that the matter profile effect induces extra uncertainty for average matter parameter. Taking into account this extra uncertainty, we make numerical calculations for the sensitivity to CP violation search. The results show that the CP sensitivity is impaired in large Ue3, region.

Año de publicación:

2003

Keywords:

Fuente:

scopus