Ponente
Nicola Barbieri
(INFN Ferrara)
Descripción
We present updated constraints on the coupling of thermally-produced axion-like particles with leptons and photons, derived from recent cosmic microwave background (CMB), baryon acoustic oscillation and big bang nucleosynthesis datasets. Additionally, we improve upon previous studies by using a more accurate axion distribution function obtained from solving the full Boltzmann equation, thereby incorporating spectral distortions arising from a non-instantaneous decoupling. Our analysis provides constraints based on the latest available observational data and includes forecasts for next-generation CMB experiments.
Autores primarios
Nicola Barbieri
(INFN Ferrara)
Massimiliano Lattanzi
(Universita' di Ferrara)
Dr.
Luca Caloni
(CFisUC, Department of Physics, University of Coimbra)
Luca Visinelli
(Università degli Studi di Salerno, Italy)
Martina Gerbino
(INFN Ferrara)
