We show that in all theories with a Lorentz-covariant energy-momentum tensor, such as all known renormalizable quantum field theories, composite as well as elementary massless particles with j 〉 1 are forbidden. Also, in all theories with a Lorentz-covariant conserved current, such as renormalizable theories with a symmetry that commutes with all local symmetries, there cannot exist composite or elementary particles with nonvanishing values of the corresponding charge and j 〉 1/2.
|Original language||English (US)|
|Number of pages||4|
|Journal||"Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics"|
|State||Published - 1980|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics