Spectrum of the Y=2 Pentaquarks
  By assuming a mass formula for the spectrum of the Y=2 pentaquarks, where the chromo-magnetic interaction plays a main role, and identifying the lightest state with the Theta^+(1540), we predict a spectrum in good agreement with the few I=0 and I=1 candidates proposed in the past. 
F. Buccella, D. Falcone and F. Tramontano