We present calculations of matrix elements of 4-quark operators in the pion
and in the nucleon extracted from quenched Monte Carlo simulations at beta =
6.0 using Wilson fermions. These operators are relevant for higher-twist
effects. We are particularly careful to avoid mixing with lower-dimensional
operators by choosing appropriate flavour structures.Comment: Lattice 2000 (Hadronic Matrix Elements), 4 pages, 2 figure
