2 citations · 2 across the 11 of their papers we have counts for
11 papers
Seesaw Cosmology
Nicolás Bernal, Chee Sheng Fong, Óscar Zapata
We study perturbative reheating in which the inflaton transfers its energy to the Standard Model through right-handed neutrinos (RHNs) responsible for light-neutrino masses via the…
Probing inelastic sub-GeV dark matter at the DUNE near detector
Amalia Betancur, Gustavo Castrillón, Óscar Zapata
We study inelastic dark matter (iDM) in a minimal and ultraviolet-complete framework in which the dark photon mass arises from a dark Higgs mechanism. The spontaneous breaking of a…
Feasibility to probe the dynamical scotogenic model at the LHC
Gustavo Ardila-Tafurth, Andrés Flórez, Cristian Rodríguez +2
We perform a feasibility study to probe dark matter (DM) production at the LHC within a global scotogenic model. The study is conducted using the Markov Chain Monte Carlo…
Pion dark matter in a vacuum: a thermal relic with sharp velocity-dependent self-interactions
Camilo García-Cely, Giacomo Landini, Luca Marsili +1
As recently proposed, a non-vanishing topological angle may play a central role in QCD-like theories of dark matter (DM). In this work, we introduce a dark photon portal to the Sta…
Probing low-reheating scenarios with minimal freeze-in dark matter
Nicolás Bernal, Chee Sheng Fong, Óscar Zapata
The parameter space of freeze-in dark matter (DM) with mass through light dark photon (``minimal freeze-in DM'') is currently being probed by direct detection experiments thr…
Asymmetries from a charged memory-burdened PBH
Basabendu Barman, Kousik Loho, Óscar Zapata
We explore a purely gravitational origin of observed baryon asymmetry and dark matter (DM) abundance from asymmetric Hawking radiation of light primordial black holes (PBH) in pres…
Constraining burdened PBHs with gravitational waves
Basabendu Barman, Kousik Loho, Óscar Zapata
We investigate the implications of memory burden on the gravitational wave (GW) spectrum arising from the Hawking evaporation of light primordial black holes (PBHs). By considering…
Gravitational wave signatures of cogenesis from a burdened PBH
Basabendu Barman, Md Riajul Haque, Óscar Zapata
We explore the possibility of explaining the observed dark matter (DM) relic abundance, along with matter-antimatter asymmetry, entirely from the evaporation of primordial black ho…
Dark matter in QCD-like theories with a theta vacuum: cosmological and astrophysical implications
Camilo García-Cely, Giacomo Landini, Óscar Zapata
QCD-like theories in which the dark matter (DM) of the Universe is hypothesized to be a thermal relic in the form of a dark pion has been extensively investigated, with most studie…
Singlet Dirac dark matter streamlined
Carlos E. Yaguna, Óscar Zapata
We propose a new and compact realization of singlet Dirac dark matter within the WIMP framework. Our model replaces the standard stabilizing symmetry with a , and uses s…
Bremsstrahlung-induced Gravitational Waves in Monomial Potentials during Reheating
Basabendu Barman, Nicolás Bernal, Yong Xu +1
We discuss the production of primordial gravitational waves (GW) from radiative inflaton decay during the period of reheating, assuming perturbative decay of the inflaton either in…