| Speaker: | Serguey T. Petcov (INFN/SISSA) |
|---|---|
| Title: | Modular-Symmetry-Protected Seesaw Mechanism |
| Date (JST): | Fri, Nov 07, 2025, 13:30 - 15:00 |
| Place: | Seminar Room A |
| Abstract: |
In the presence of a finite modular flavour symmetry, fermion mass hierarchies may be generated by a slight deviation of the modulus from a symmetric point. We point out that this small parameter governing charged-lepton mass hierarchies may also be responsible for the breaking of lepton number in a symmetry-protected low-scale seesaw, sourcing active neutrino masses and the mass splitting of a pseudo-Dirac pair of heavy neutrinos. We discuss the phenomenological implications of this mechanism, including the possibility to test the considered models at future planned and proposed heavy neutral lepton searches. |
