Weyl Fermion: Long-Sought Massless Particle Finally Observed

The Weyl fermion – an elusive massless particle theorized 85 years ago – has been confirmed by direct observations for the first time. In 1928 Paul Dirac discovered a crucial equation in particle physics and quantum mechanics, now known as Dirac equation. Very fast electrons were solutions to the Dirac equation. Moreover, the equation predicted [...] —> Read More