FLASY 2022 - 9th Workshop on Flavour Symmetries and Consequences in Accelerators and Cosmology

Session

Parallel Session I.2

30 Jun 2022, 16:45

Conveners

Parallel Session I.2

• Andreas Trautner

6. An ultraviolet completion for the Scotogenic model

Pablo Escribano

30/06/2022, 16:45

The Scotogenic model is an economical scenario that generates neutrino masses at the 1-loop level and includes a dark matter candidate. This is achieved by means of an ad-hoc $Z_2$ symmetry, which forbids the tree-level generation of neutrino masses and stabilizes the lightest $Z_2$-odd state. Neutrino masses are also suppressed by a quartic coupling, usually denoted by $\lambda_5$. While the...

27. Scotogenic Majorana neutrino masses in an orbifold theory of flavor

Omar Medina (Instituto de Física Corpuscular (CSIC - Universitat de València))

30/06/2022, 17:00

An extra-dimensional extension of the standard model is presented. It displays a flavor $A_4$ symmetry among the three generations of fermions at the high energy regime. The model offers a symmetrical origin to quark and lepton mixings in a unified framework. The neutrino masses in the model emerge at one loop in a scotogenic fashion. The minimalist set up of the model is highly predictive and...

31. Flavored Dark Matter: Scotogenic Dark Symmetry from Flavor symmetry

Newton Nath (INFN Bari)

30/06/2022, 17:15

It is well known in the literature that the "Scotogenic" model explains dark-matter (DM) along with neutrino mass generation in a very simple and elegant way. However, it needs an 'ad-hoc' $Z_2$ symmetry to explain DM and also does not shed any light on the neutrino flavor sector, for which typically another "flavor symmetry" needs to be added to the model. Furthermore, neither the dark...

14. Flavour and dark matter in a hybrid seesaw/scotogenic model

Henrique Brito Câmara

30/06/2022, 17:30

I will present our recent work based on a hybrid Type-II seesaw/scotogenic model supplemented with a discrete flavour symmetry where CP is broken by the vacuum. Namely, we analyse compatibility with low-energy neutrino observables, study the charged lepton flavour violation implications and review the scalar and fermionic dark matter prospects of our framework.

45. Sterile neutrino portals to Majorana dark matter

Arsenii Titov (University of Valencia and IFIC)

30/06/2022, 17:45

Stringent constraints on the interactions of dark matter with the Standard Model suggest that dark matter does not take part in gauge interactions. In this regard, the possibility of communicating between the visible and dark sectors via gauge singlets seems rather natural. We consider a framework where the dark matter talks to the Standard Model through its coupling to sterile neutrinos,...

29. Tasting Flavoured Majorana Dark Matter

Harun Acaroglu (Karlsruhe Institute of Technology)

30/06/2022, 18:00

I will discuss a flavoured dark matter (DM) model set up in the so called Dark Minimal Flavour Violation (DMFV) framework. The model extends the Standard Model by a DM flavour triplet and a scalar mediator, through which the new dark fermions couple to right-handed up-type quarks. This interaction is governed by a new coupling matrix which is assumed to constitute the only new source of...

9. Dark matter in three-Higgs-doublet models with S$_{3}$ symmetry

Anton Kuncinas (CFTP/IST, U. Lisboa)

30/06/2022, 18:15

Models with two or more scalar doublets with discrete or global symmetries can have vacua with vanishing vacuum expectation values in the bases where symmetries are imposed. If a suitable symmetry stabilises such vacua, these models may lead to interesting dark matter (DM) candidates, provided that the symmetry prevents couplings among the DM candidates and the fermions. We analyse...