The Origin of Matter in The Universe --- Why do we exist ? ---

by Tsutomu Yanagida (Shanghai Jiao Tong University)

Thursday 23 Jan 2020, 15:15 → 16:15 Europe/Stockholm

Oskar Kleins Auditorium (FR4)

In this colloquium, I will explain why tiny neutrino masses are a key
ingredient to explain the baryon asymmetry in the universe. The small
neutrino masses are elegantly explained by the Seesaw mechanism which
predicts large Majorana masses of the right-handed neutrinos. These
heavy Majorana fermions are nothing but sources of baryon asymmetry in
the universe. I observed the seesaw mechanism more than 40 years ago.

I will show you why I could find this mechanism, which I never explained
in such a public lecture beside a few small places. And I will show you
why I gave it the name "Seesaw Mechanism".

http://video.albanova.se/arc2020_03.html