Helizitäten
Helizitäten is a term used in physics, particularly in quantum mechanics and particle physics, to describe a specific property of a particle related to its spin and its direction of motion. It is closely related to the concept of chirality but is a more precise measurement in relativistic contexts. Essentially, helizität is the projection of a particle's spin vector onto its momentum vector.
The helizität of a particle can be either positive or negative. A positive helizität means the spin
For massive particles, helizität is not a strictly conserved quantity in the same way as for massless