Apparent CPT Violation in Neutrino Oscillation Experiments

Understand

We consider searching for light sterile fermions and new forces by using long baseline oscillations of neutrinos and antineutrinos.

• A new light sterile state and/or a new force can lead to apparent CPT violation in muon neutrino and antineutrino oscillations.
• As an example, we present an economical model of neutrino masses containing a sterile neutrino.
• The potential from the Standard Model neutral current gives rise to a difference between the disappearance probabilities of neutrinos and antineutrinos, when mixing with a light sterile neutrino is considered.