12th Workshop on Flavor Symmetries and Consequences in Accelerators and Cosmology (FLASY 2026)

Session

Flavor 2

19 Aug 2026, 09:00

Commodore Hotel

56. Modular Flavor Symmetries and Fermion Mass Hierarchy

Prof. Mu-Chun Chen (University of California, Irvine)

19/08/2026, 09:00

Invited plenary talks: 25'+5'

I will discuss recent progress based on modular flavor symmetries to solve the flavor puzzle. In particular, I will describe how modular flavor symmetries can give rise to fermion mass hierarchy and mixing. I will also show that such predictions are stable under renormalization group corrections.

58. Modular Zeros

Michael Ratz (University of California, Irvine)

19/08/2026, 09:30

Invited plenary talks: 25'+5'

Modular symmetries have been used to address the flavor puzzle. We will discuss how the properties of modular forms allow us to resolve long-standing puzzles in string and flavor model building.

8. Gravity tidings from domain walls: Flavour hierarchies are making waves

Miguel Levy (University of Basel)

19/08/2026, 10:00

Invited plenary talks: 25'+5'

Explaining the observed charged fermion mass hierarchies points to flavour symmetries inducing a suppression of the lighter species’ masses. When the symmetries are global, it is expected that such symmetries are broken by gravity via Planck scale suppressed effective operators. The potential of the spontaneous symmetry-breaking “flavon” field, if the symmetry is discrete, then possesses...