Speaker
Description
In conflict with the observations of light neutrino masses, the Standard Model of particle physics does not include a neutrino mass term. One possible extension to the Standard Model addressing this deficit is the addition of sterile neutrinos able to generate neutrino masses via the type I seesaw mechanism. Collider detectable low scale seesaw models are generically protected by a lepton-number like symmetry leading to pseudo-Dirac sterile neutrinos. These particles exhibit an interesting phenomenology as they can oscillate between particle and antiparticle states, similar to light neutrinos and neutral mesons. The properties of these oscillations are directly correlated to the amount of lepton number violation generated by the sterile neutrinos. Recently we have shown that the LHC is able to probe this feature for long-lived neutrinos using a full Monte Carlo analysis. Further in the future the FCC-ee will be the perfect tool to probe the parameter space of long-lived neutrinos. In this project you will study the potential of the FCC-ee to discover lepton number violation and neutrino-antineutrino oscillations after sterile neutrinos have been discovered.
