Weak Basis Transformations and Texture Zeros in the Leptonic Sector

Details Weak Basis Transformations and Texture Zeros in the Leptonic Sector Weak Basis Transformations and Texture Zeros in the Leptonic Sector

2007-11-12

arxiv.org/abs/0711.1613v2

Phys.Lett.B670:340-349,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures; a few comments added and the full complex case for all classes is now presented; final version to appear

Scientific paper

10.1016/j.physletb.2008.10.059

We investigate the physical meaning of some of the texture zeros which appear in most of the Ansatze on leptonic masses and their mixing. It is shown that starting from arbitrary lepton mass matrices and making suitable weak basis transformations one can obtain some of these sets of zeros, which therefore have no physical content. We then analyse four-zero texture Ansatze where the charged lepton and neutrino mass matrices have the same structure. The four texture zeros cannot be obtained simultaneously through weak basis transformations, so these Ansatze do have physical content. We show that they can be separated into four classes and study the physical implications of each class.

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