Neutrinos as a probe of CP-violation and leptogenesis

SILVIA PASCOLI

Physics Department, Theory Division, CERN, CH-1211 Geneva

23, Switzerland and IPPP, Department of Physics, University of Durham, Durham

DH1 3LE, United Kingdom

E-mail: Silvia.Pascoli@cern.in

Abstract. Establishing CP-violation in the lepton sector is one of

the most challenging future tasks in neutrino physics. The lepton

mixing matrix contains one Dirac phase and, if neutrinos are Majorana

particles, two additional CP-violating phases. I will review the main

theoretical aspects of CP-violation in the lepton sector. Then, I

will present the strategies for determining the Dirac and the

Majorana CP-violating phases in long-baseline and neutrinoless double

beta decay experiments, respectively. Leptonic CP-violation has

received recently a lot of attention as it might be at the origin of

the baryon asymmetry of the Universe. Within the context of the

see-saw mechanism, I will discuss the possible connection between

the CP-violating phases measurable at low energy with the ones

entering in leptogenesis.

Keywords. Neutrino; CP-violation; leptogenesis.

PACS Nos 14.60.Pq; 11.30.Er; 11.30.Fs