Correlators of arbitrary untwisted operators and excited twist operators   for N branes at angles
  We compute the generic correlator with L untwisted operators and N (excited) twist fields for branes at angles on T^2 and show that it is given by a generalization of the Wick theorem. We give also the recipe to compute efficiently the generic OPE between an untwisted operator and an excited twisted state. 
Igor Pesando
hep-th