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

Session

Flavor 3

22 Aug 2026, 08:55

Commodore Hotel

5. Non-invertible selection rules in string theory and particle physics

Tatsuo Kobayashi (Hokkaido University)

22/08/2026, 09:00

Invited plenary talks: 25'+5'

Group-like symmetries and selection rules have been studied in particle physics. However, string compactifications can lead to not only group-like symmetries, but also "symmetries" without group actions, i.e., non-invertible selection rules. Recently, we have derived several non-invertible selection rules from string theory and applied them to particle physics. See e.g. arXiv:2408.13984,...

4. Flavor Physics of quarks and leptons in non-invertible symmetry

MORIMITSU TANIMOTO (Niigata University)

22/08/2026, 09:30

Invited plenary talks: 25'+5'

We discuss the phenomenological aspects of non-invertible symmetries, in particular, the flavor structure of quarks and leptons. We start with a $Z_M$ discrete symmetry and gauge $Z_2$ so as to obtain a non-invertible symmetry. We derive Yukawa matrices with texture zeros which cannot be realized by a conventional symmetry. We also discuss the SMEFT imposing the non-invertible symmetries and...

43. Flavor Physics with Non-invertible Symmetry: Radiative Neutrino Mass and Beyond

Prof. Hiroshi Okada (Henan Normal University)

22/08/2026, 10:00

Invited plenary talks: 25'+5'

Symmetries have played a central role in understanding the structure of particle interactions, especially in flavor physics. Recently, non-invertible symmetries, described by fusion algebras instead of conventional groups, have opened a new direction in model building.
I will present a radiative neutrino mass model based on some non-invertible fusion rules. The framework provides a novel...