The number of effective relativistic neutrino species represents a fundamental probe of the
thermal history of the early Universe, and as such of the Standard Model of Particle Physics …

We explore the possibility that dark matter interactions with Standard Model particles are
dominated by interactions with neutrinos. We examine whether it is possible to construct …

We present a new mechanism of baryogenesis and dark matter production in which both the
dark matter relic abundance and the baryon asymmetry arise from neutral B meson …

We study a simple model of thermal dark matter annihilating to standard model neutrinos via
the neutrino portal. A (pseudo-) Dirac sterile neutrino serves as a mediator between the …

Right-handed neutrinos (RHNs) provide a natural portal to a dark sector accommodating
dark matter (DM). In this work, we consider that the dark sector is connected to the standard …

We explore the possibility of probing freeze-in dark matter (DM) produced via the right-
handed neutrino (RHN) portal using the RHN search experiments. We focus on a simplified …

Standard Model (SM) of particle physics has achieved enormous success in describing the
interactions among the known fundamental constituents of nature, yet it fails to describe …

We analyze a simple extension of the standard model (SM) with a dark sector composed of a
scalar and a fermion, both singlets under the SM gauge group but charged under a dark …

A bstract We study the freeze-in production of Feebly Interacting Massive Particle (FIMP)
dark matter candidates through a neutrino portal. We consider a hidden sector comprised of …

We investigate the thermal cosmology and terrestrial and astrophysical phenomenology of a
sub-GeV hadrophilic dark sector. The specific construction explored in this work features a …