Measurements of the temperature and polarization anisotropy cosmic microwave background (CMB) provided strong confirmation vanilla flat ?CDM model structure formation. Even if this fits incredibly well, cosmological astrophysical observations in a wide range scales epochs, some interesting tensions between probes, anomalies CMB data, have emerged. These discrepancies different statistical signi...

A bstract If dark matter (DM) interacts with the Standard Model (SM) via kinetic mixing (KM) portal, it necessitates existence of portal (PM) particles which carry both and SM quantum numbers that will appear in vacuum polarization-like loop graphs. In addition to familiar ∼ eϵQ strength, QED-like interaction for photon (DP), some setups different graphs these PM states can also induce other co...