  Using CFT techniques, we compute the disorder-averaged p-th power of the
spin-spin correlation function for the ferromagnetic random bonds Potts model.
We thus generalize the calculation of Dotsenko, Dotsenko and Picco, where the
case p=2 was considered. Perturbative calculations are made up to the second
order in epsilon (epsilon being proportional to the central charge deviation of
the pure model from the Ising model value). The explicit dependence of the
correlation function on $p$ gives an upper bound for the validity of the
expansion, which seems to be valid, in the three-states case, only if p<=4.
