Implications of finite one-loop corrections for seesaw neutrino masses

TL;DR

This paper examines how finite one-loop corrections in the seesaw model affect neutrino masses and mixing patterns, revealing potential deviations from tri-bimaximal mixing based on model parameters.

Contribution

It provides a detailed analysis of the impact of finite one-loop corrections on neutrino observables within the seesaw framework, highlighting their significance.

Findings

Finite corrections can cause sizable deviations from tri-bimaximal mixing.

The corrections depend on specific seesaw model parameters.

Implications for low-energy neutrino measurements are discussed.

Abstract

In the standard seesaw model, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by a heavy neutrino. We discuss the impact that these corrections may have on the different low-energy neutrino observables paying special attention to their dependence with the seesaw model parameters. It is shown that sizable deviations from the tri-bimaximal mixing pattern can be obtained when these corrections are taken into account.