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arXiv · hep-lat/0010043

Four-quark operators in hadrons

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

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.

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S. Capitani, M. Gockeler, R. Horsley, B. Klaus, W. Kurzinger, D. Petters, D. Pleiter, P. E. L. Rakow, S. Schaefer, A. Schafer, G. Schierholz. 2000-10-26. Four-quark operators in hadrons. https://doi.org/10.1016/s0920-5632(01)00940-9

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