Production of Pentaquark States in pp Collisions within the   Microcanonical Ensemble
  The microcanonical statistical approach is applied to study the production of pentaquark states in pp collisions. We predict the average multiplicity and average transverse momentum of Theta^{+}(1540) and Xi(1860) and their antiparticles at different energies. 
F.M.Liu, H. Stoecker, K. Werner