6 papers
From oversimplified to overlooked: the case for exploring Rich Dark Sectors
Asli Abdullahi, Francesco Costa, Andrea Giovanni De Marchi +9
The Standard Model (SM) of particle physics provides a very successful description of fundamental particles and their interactions but it is incomplete, as neutrino masses, dark ma…
Did IceCube discover Dark Matter around Blazars?
Andrea Giovanni De Marchi, Alessandro Granelli, Jacopo Nava +1
Models of blazar jets, that explain observations of their photon spectra, typically predict too few neutrinos to be possibly seen by existing telescopes. In particular, they fall s…
ALP leptogenesis
Martina Cataldi, Alberto Mariotti, Filippo Sala +1
We propose a novel realisation of leptogenesis that relies on the out-of-equilibrium decay of an axion-like particle (ALP) into right-handed Majorana neutrinos (RHNs) in the early…
Relic Neutrino Background from Cosmic-Ray Reservoirs
Andrea Giovanni De Marchi, Alessandro Granelli, Jacopo Nava +1
We compute the flux of relic neutrino background (RB) up-scattered by ultra-high-energy (UHE) cosmic rays (CRs) in clusters that act as CR-reservoirs. The long trapping times of…
Particle shells from relativistic bubble walls
Iason Baldes, Maximilian Dichtl, Yann Gouttenoire +1
Relativistic bubble walls from cosmological phase transitions (PT) necessarily accumulate expanding shells of particles. We systematically characterize shell properties, and identi…
Baryogenesis and Leptogenesis from Supercooled Confinement
Maximilian Dichtl, Jacopo Nava, Silvia Pascoli +1
We propose a framework of baryogenesis and leptogenesis that relies on a supercooled confining phase transition (PT) in the early universe. The baryon or lepton asymmetry is source…