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

Session

Contributed 2

19 Aug 2026, 14:30

Commodore Hotel

6. Flavor and precision study of a minimally extended scotogenic model

Huchan Lee (Seoul National University of Science and Technology)

19/08/2026, 14:30

Parallel talks: 17'+3'

We investigate the phenomenology of a minimally extended scotogenic model motivated by the observed active neutrino masses, viable dark matter (DM) candidates, and the high-energy behavior of the Standard Model (SM) quartic coupling constant. The neutrino mass generation mechanism is briefly reviewed, covering both normal and inverted mass hierarchies, along with a concise discussion of DM...

32. Reviving the Low-Mass Right Handed Neutrino Regime in Minimal Scotogenic Leptogenesis using Majoron Velocity

Arghyajit Datta (Chung-Ang University)

19/08/2026, 14:50

Parallel talks: 17'+3'

In this talk, we will present a possibility of realising successful cogenesis of baryon asymmetry of the Universe, dark matter and neutrino masses within the minimal scotogenic model with low-mass right handed neutrinos (RHN). In the conventional thermal scotogenic leptogenesis setup, there exists a viable parameter space with smaller masses for RHNs as compared to Type-I seesaw case, because...

44. Lepton number violation at hadron colliders via pseudo-Dirac heavy neutral leptons

Mr Bruno M. S. Oliveira (Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa (UL))

19/08/2026, 15:10

Parallel talks: 17'+3'

Symmetry-protected low-scale seesaw models can account for the observed neutrino flavour oscillations without fine-tuning, while yielding collider-accessible signatures through pseudo-Dirac heavy neutral leptons (HNLs). Seesaw frameworks generically predict lepton number (LN) violation, which provides a powerful discovery channel. In symmetry-protected realisations, however, the amplitudes for...

37. Beyond $SU(N)$: $U(3) \times U(2)$ as the true gauge group of the strong and electroweak interactions

Avelino Vicente (IFIC, CSIC-UV)

19/08/2026, 15:30

Parallel talks: 17'+3'

The gauge principle is a cornerstone of model building, yet most constructions gauge only the $SU(N)$ factors while leaving the associated $U(1)$ phase redundancies global. I take the gauge principle to its logical extreme and promote all $SU(N)$ groups to $U(N)$, proposing that the underlying symmetry of the strong and electroweak interactions is not $SU(3)_c \times SU(2)_L \times U(1)_Y$ but...