XIIIth School of Cosmology
November 12 - 18, 2017IESC, Cargèse
The CMB from A to Z
promises and challenges of the CMB as a cosmological probe

Probing secret interactions in the neutrino sector  through CMB observations

Francesco Forastieri
Physics Department, University of Ferrara

Short Talk

Abstract : In this talk I will show an approach to constrain non standard interactions in the neutrino sector.
I will first present the theoretical framework of pseudoscalar and Fermi-like interacting neutrinos, then I will move on the constraints obtained using cosmological data.
In particular I will show results, obtained using Planck 2013 and 2015 data, for a secret pseudoscalar interaction in the massless neutrino sector and for a Femi-like secret interaction in the massive sterile sector.