# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Global fit to right-handed neutrino mixing at 1 loop

Jul 23, 2015, 5:15 PM
15m
HS7

### HS7

talk Neutrino Physics

### Speaker

Mr Josu Hernandez (IFT-CSIC)

### Description

We extend the Standard Model with 3 right-handed neutrinos with an approximate lepton number symmetry, which leads to sizable neutrino mixing while generating the neutrino masses and PMNS matrix measured in oscillation experiments. Constraints on the right-handed neutrino mixing are derived through a global fit to electroweak precision observables. We analyze explicitly the impact of one-loop corrections on these constraints.