Baryon Polarization, Phases of Amplitudes and Time Reversal Odd   Observables
  We elaborate two different methods for extracting from data the relative phase of two amplitudes of some sequential decays of baryons. We also relate this phase to a particular physical angle. Moreover we suggest how to infer some time reversal odd observables from data. 
E. Di Salvo and Z. J. Ajaltouni
hep-ph