Eur. Phys. J. C 23, 249-258 (2002)
https://doi.org/10.1007/s100520100867

Low energy threshold corrections to neutrino masses and mixing angles

Institute of Theoretical Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland

Received: 24 October 2001
Revised: 19 November 2001
Published online: 25 January 2002

Abstract

We compute the low energy threshold corrections to neutrino masses and mixing in the standard model (SM) and its minimal supersymmetric version, using the effective theory technique. We demonstrate that they stabilize the results for neutrino masses and mixing with respect to the choice of the scale to which the renormalization group (RG) equation is integrated. (This confirms the correctness of the recent re-derivation of the RGE for the SM in hep-ph/0108005.) Since, as is known, those corrections are potentially very important for phenomenology we derive for them the explicit formulae that can be applied to specific models of neutrino masses and mixing.