Overview

• The KATRIN experiment has established that the mass of neutrinos is less than 0.45 electron volts, halving the previous upper limit.
• This breakthrough was achieved by analyzing 36 million electron energies from tritium decays to detect the subtle effects of neutrino mass.
• Neutrinos, among the lightest known particles, are over a million times lighter than electrons, challenging existing theories of mass generation.
• Understanding neutrino mass is crucial for exploring how these particles influence galaxy formation and the evolution of the universe.
• KATRIN will continue collecting and analyzing data until late 2025 to further refine these constraints and advance particle physics research.