Speaker
Description
Neutrinos having a non-zero mass is our first laboratory evidence for New Physics. Yet the absolute mass scale remains unknown. Cosmology plays a fundamental role, as it sets the world-leading constraint and, in the near future, it should measure the exact value.
However, any cosmology inference is indirect. So, what are we really measuring with current cosmological data?
In this talk, I will review the impact of neutrino masses on our most precise cosmological observables. I will show that simple long-ranged interactions among neutrinos fully invalidate the present cosmological mass bound, which could lead to contradictions between next-generation measurements and the laboratory. I will discuss the key role that kinematic measurements, such as that at KATRIN, play in unraveling the properties of non-relativistic neutrinos.
