The mysterious flavours of the universe

Who: Belen Gavela (Universidad Autónoma de Madrid)
When: Monday, June 6, 2016 at 14:15
Where: The CP³ meeting room

What is the universe made of ? Particle physicists have developed a “Standard Model” that answers this with a set of only four particles as building blocks. Yet two massive replicas of this set exist. These additional flavours of particles do not seem to have a purpose, and their masses and mixings appear arbitrary. I will discuss recent developments that could suggest a change of paradigm in this understanding. Moreover, astrophysicists and cosmologists have shown that most of the universe is composed of an unknown kind of “dark matter”, perhaps also in flavours. Standard Model neutrinos and unknown dark matter are the most abundant particles and may provide the ultimate clue to the flavor puzzle and the absence of antimatter in the visible universe. I will overview the status of the flavour puzzle, with emphasis on new light shed by the neutrino sector and experimental consequences.