The DESI collaboration interpret a discrepancy in the LCDM parameter Ωₘ at different effective redshifts as a dynamical dark energy signal. I will identify a number of hurdles that need to be cleared before one can fully buy into the claim.
In this talk, I will discuss an alternative production mechanism for long-lived heavy neutrinos within the framework of neutrinophilic Higgs doublet models, where an additional Higgs doublet couples exclusively to the Standard Model (SM) lepton doublets and right handed neutrinos (RHNs). This structure allows the vacuum expectation value (VEV) of the extra Higgs doublet to be much smaller than...
We explore the phenomenology of the Dark Photon iDM (A'iDM) model, one of the simplest and most direct realisations of the inelastic Dark Matter (iDM) scenario. In this framework, the Standard Model (SM) is extended by a dark sector with an additional U(1)_D gauge symmetry. All SM particles are neutral under this symmetry, which couples to the SM hypercharge gauge boson via a kinetic mixing...
The detection of gamma-ray signals from primordial black holes (PBHs) could provide compelling
evidence for their role as a dark matter candidate, particularly through the observation of their
Hawking radiation. Future gamma-ray observatories, such as e-ASTROGAM, and the next-generation
telescopes, are poised to explore this possibility by measuring both Standard Model (SM) and...
