Symmetrical Parametrizations of the Lepton Mixing Matrix

TL;DR

This paper discusses the benefits of a symmetrical parametrization of the lepton mixing matrix, enhancing understanding of neutrino oscillations, lepton number violation, and sterile neutrino scenarios.

Contribution

It introduces and advocates for a symmetrical form of the lepton mixing matrix, improving conceptual clarity and applicability in various neutrino physics contexts.

Findings

Provides a clearer description of neutrino oscillations.

Clarifies the role of Dirac and Majorana phases.

Suitable for scenarios with light sterile neutrinos.

Abstract

Advantages of the original symmetrical form of the parametrization of the lepton mixing matrix are discussed. It provides a conceptually more transparent description of neutrino oscillations and lepton number violating processes like neutrinoless double beta decay, clarifying the significance of Dirac and Majorana phases. It is also ideal for parametrizing scenarios with light sterile neutrinos.