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

Date:

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Time:

Thursday, 23 Jan. 2020

Video-Recording for any system with MP4-support

- Video.mp4 (ca.406 Mb)

15:15 – 16:15

(Tsutomu Yanagida from Shanghai Jiao Tong University)

Abstract:

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".