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The spin structure of the Lambda hyperon in quenched lattice QCD

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arxiv hep-lat/0110057 v1 pith:LCOZUN6M submitted 2001-10-12 hep-lat hep-ph

M. Göckeler , R. Horsley , D. Pleiter , P.E.L. Rakow , S. Schaefer , A. Schäfer , G. Schierholz This is my paper
classification hep-lathep-ph
keywords lambdaspinstructurequenchedapproximationaxialbeencontributions
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It has been suggested to use the production of Lambda hyperons for investigating the nucleon spin structure. The viability of this idea depends crucially on the spin structure of the Lambda. Using nonperturbatively O(a) improved Wilson fermions in the quenched approximation we have studied matrix elements of two-quark operators in the Lambda. We present results for the axial vector current, which give us the contributions of the u, d, and s quarks to the Lambda spin.

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