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6 papers · 2 filters
Fermion and scalar two-component dark matter from a symmetry
Carlos E. Yaguna, Óscar Zapata
We revisit a two-component dark matter model in which the dark matter particles are a singlet fermion () and a singlet scalar (), both stabilized by a single symmetry.…
ALP Dark Matter in a Primordial Black Hole Dominated Universe
Nicolás Bernal, Yuber F. Perez-Gonzalez, Yong Xu +1
We investigate the phenomenological consequences of axion-like particle (ALP) dark matter with an early matter domination triggered by primordial black holes (PBHs). We focus on li…
Systematic study of the local gauge symmetry
Richard H. Benavides, Yithsbey Giraldo, Luis Muñoz +2
We review in a systematic way how anomaly free models without exotic electric charges can be constructed, using as basis closed sets of fermi…
Anomaly-free Abelian gauge symmetries with Dirac seesaws
Nicolás Bernal, Diego Restrepo
We perform a systematic analysis of Standard Model extensions with an additional anomaly-free gauge symmetry, to generate tree-level Dirac neutrino masses. An anomaly-free s…
Two-component scalar dark matter in scenarios
Carlos E. Yaguna, Óscar Zapata
In multi-component scalar dark matter scenarios, a single () symmetry may account for the stability of different dark matter particles. Here we study the case where…
Phenomenology of the Zee model for Dirac neutrinos and general neutrino interactions
Julián Calle, Diego Restrepo, Óscar Zapata
The Zee model for Dirac neutrinos is one of the simplest models featuring one-loop Dirac neutrino masses. The interactions between the new scalars (two singly-charged fields) and n…