TriMinimal Parametrization of the Neutrino Mixing Matrix
Abstract
Current experimental data on neutrino mixing are very well described by TriBiMaximal mixing. Accordingly, any phenomenological parametrization of the MNSP matrix must build upon TriBiMaximal mixing. We propose one particularly natural parametrization, which we call "TriMinimal". The three small deviations of the PDG angles from their TriBiMaximal values, and the PDG phase, parametrize the TriMinimal mixing matrix. As an important example of the utility of this new parametrization, we present the simple resulting expressions for the flavor-mixing probabilities of atmospheric and astrophysical neutrinos. As no foreseeable experiment will be sensitive to more than second order in the small parameters, we expand these flavor probabilities to second order.
Keywords
Cite
@article{arxiv.0711.0052,
title = {TriMinimal Parametrization of the Neutrino Mixing Matrix},
author = {Sandip Pakvasa and Werner Rodejohann and Thomas J. Weiler},
journal= {arXiv preprint arXiv:0711.0052},
year = {2008}
}
Comments
Typos corrected, references added, title changed; matches version appearing in PRL 100, 111801 (2008);