7 papers
Dark Matter Interpretation of the Super-Kamiokande Antineutrino Excess and Predictions for JUNO
Alessandro Granelli, Silvia Pascoli, Salvador Rosauro-Alcaraz
Super-Kamiokande has reported a small excess of electron antineutrino events in the 20 MeV energy range, in the search for the diffuse supernova neutrino background. We interpret t…
Nanohertz gravitational waves from the baryon-dark matter coincidence
Alessia Musumeci, Jacopo Nava, Silvia Pascoli +1
The nanohertz gravitational waves (GW) observed by pulsar timing arrays may originate from a cosmological first-order phase transition (PT) at 100 MeV. Taking this possibili…
Boiling away asymmetries: low-scale phase transitions, gravitational waves and leptogenesis
Leonardo Grimaldi, Michele Lucente, Silvia Pascoli
Leptogenesis is one of the most popular mechanisms to account for the observed baryon asymmetry of the Universe. A generic feature of leptogenesis is a large separation of scales b…
Supercooled Dark Scalar Phase Transitions explanation of NANOGrav data
Francesco Costa, Jaime Hoefken Zink, Michele Lucente +2
The evidence of a Stochastic Gravitational Wave Background (SGWB) in the nHz frequency range is posed to open a new window on the Universe. A preferred explanation relies on a supe…
ELENA: a software for fast and precise computation of first order phase transitions and gravitational waves production in particle physics models
Francesco Costa, Jaime Hoefken Zink, Michele Lucente +2
We present ELENA (EvaLuator of tunnElliNg Actions), an open-source Python package designed to compute the full evolution of first-order phase transitions in the early Universe gene…
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…