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

Session

Neutrino 2

18 Aug 2026, 14:00

Commodore Hotel

23. Lepton number densities of Majorana neutrinos at the low energies and implications on neutrino properties

Morozumi

18/08/2026, 14:00

Invited plenary talks: 25'+5'

We study the space-time evolution of the lepton number densities of Majorana neutrinos at low energies. We study it for three neutrinos
cases preparing the initial state with momentum distribution amplitude
localized at the space-time origin. The case that the lightest neutrino is massless and the other case with three massive neutrinos are studied.
These two cases can be distinguished by...

50. Application of a non-holomorphic modular symmetry for neutrino mass models

Takaaki Nomura (Sichuan University)

18/08/2026, 14:30

Invited plenary talks: 25'+5'

In this talk we discuss neutrino mass models with a non-holomorphic modular symmetry in which we can construct a model with simpler field contents compared with holomorphic framework. After reviewing the framework, in particular, a radiative neutrino mass model with Leptoquarks is discussed where lepton and quark sectors are naturally connected. Focusing on neutrino mass matrix, results of...

19. Invariance of the Friedberg-Lee translation as a partial flavor symmetry

Zhi-zhong Xing (Institute of High Energy Physics, Chinese Academy of Sciences)

18/08/2026, 15:00

Invited plenary talks: 25'+5'

A neutrino would be the Goldstone-like (massless) fermion if its field had a translational symmetry, as first pointed out by D.V.Volkov and V.P. Akulov in their pioneering paper about supersymmetry in 1973. But it was R. Friedberg and T.D. Lee who first applied such a working symmetry to constraining the pattern of lepton flavor mixing in 2006. My talk is intended to explain why the...