Four-quark operators in hadrons

Authors
Capitani, S Gockeler, M Horsley, R Klause, B Kurzinger, W Petters, D Pleiter, D Rakow, PEL Schaefer, S Schafer, A Schierholz, G
Citation
S. Capitani et al., Four-quark operators in hadrons, NUCL PH B-P, 94, 2001, pp. 299-302
Citations number
4
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
09205632 → ACNP
Volume
94
Year of publication
2001
Pages
299 - 302
Database
ISI
SICI code
0920-5632(200103)94:<299:FOIH>2.0.ZU;2-F
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-dimensiona l operators by choosing appropriate flavour structures.