QUARKS OF ALMOST ANY SPIN

Quark-model predictions are investigated for quarks of any half-integral spin. While quarks of spin 1/2 must obey effective Bose statistics if they are to be in space-symmetric states, we show that quarks of spin greater than 1/2 can obey either Fermi or Bose statistics. The generalization to quarks of any half-integral spin leads to essentially the same conclusions we found previously for spin-32 Fermi quarks. The quark-model predictions so far tested depend very little on the spin or statistics of quarks, but a measurement of the magnetic moment of the Ξ- or Ω- hyperon would test the spin and statistics of quarks. © 1969 The American Physical Society.