Four-quark operators in hadrons

Capitani, S.; Gockeler, M.; Horsley, R.; Klaus, B.; Kurzinger, W.; Petters, D.; Pleiter, D.; Rakow, P. E. L.; Schaefer, S.; Schafer, A.; Schierholz, G.

Four-quark operators in hadrons

Authors

Description

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.
Lattice 2000 (Hadronic Matrix Elements), 4 pages, 2 figures