Sterile Neutrinos Marco Cirelli

Sterile Neutrinos

• Marco Cirelli

• (Yale)

Introduction and Purpose

Pure e s solution for solar neutrinos

Pure  s solution for atmospheric neutrinos

4 mixing formalism

Full 4 mixing formalism

Sterile effects in the Early Universe

BigBang Nucleosynthesis

Roadmap ( = What we do)

Neutrino kinetic equations

n/p ratio

Light elements production

Bounds in the parameter space

Large Scale Structure

Bounds in the parameter space

Cosmic Microwave Background

All bounds from cosmology

LSND: in or out?

Sterile effects in SN

Neutrinos from ‘extragalactic’ sources

Sterile effects in solar neutrinos

Sterile effects in atmospheric neutrinos

Sterile effects in SBL neutrinos

Combined Results

Conclusions and Executive Summary