Parameter degeneracies and new plots in neutrino oscillations

Abstract

It is shown that plots of constant probabilities in the $({\sin }^{2}2{\theta }_{13},1/s_{23}^2)$ plane enable us to see eightfold degeneracy easily. Using this plot, I discuss how an additional long baseline measurement resolves degeneracies after the JPARC experiment measures the oscillation probabilities $P({\nu }_{\mu }\to {\nu }_e)$ and $P({\bar{\nu }}_{\mu }\to {\bar{\nu }}_e)$ at $|\Delta m_{31}^2|L/4E=\pi /2$.

Comments: 1 page, 2 figures, uses espcrc2.sty. Poster presented at 21st International Conference on Neutrino Physics and Astrophysics (Neutrino 2004), Paris, France, 14-19 Jun 2004