Universal properties of the electromagnetic interactions of spin-one systems.

  • Brodsky, Hiller
  • Published 1992 in Physical review. D, Particles and fields


The dominance of helicity-conserving amplitudes in gauge theory is shown imply universal ratios for the charge, magnetic, and quadrupole form factors spin-one bound states: Gc(Q2) : GM(Q2) : GQ(Q2) = (1 $7) : 2 : -1. These ratios hold at large space-like or time-like momentum transfer in the case of composite systems such as the p or deuteron in &CD. They… (More)

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