Helicity
= Helicity
{title2=$\lambda$}
{wiki}
Helicity is the projection of angular momentum onto the momentum direction. For a finite-helicity massless particle, the Pauli-Lubanski vector satisfies $W^\mu=\lambda P^\mu$.
= Helicity
{title2=$\lambda$}
{wiki}
Helicity is the projection of angular momentum onto the momentum direction. For a finite-helicity massless particle, the Pauli-Lubanski vector satisfies $W^\mu=\lambda P^\mu$.