OPE analysis of the nucleon scattering tensor: a review including weak interactions and finite mass effects |
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Authors: | M. Maul B. Ehrnsperger E. Stein A. Schäfer |
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Affiliation: | 1. Institut für Theoretische Physik, J. W. Goethe Universit?t Frankfurt, Postfach 11 19 32, D-60054, Frankfurt am Main, Germany
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Abstract: | We perform a systematic operator product expansion of the most general form of the nucleon scattering tensorW μν including electro-magnetic and weak interaction processes. Finite quark masses are taken into account and a number of higher-twist corrections are included. In this way we derive relations between the lowest moments of all 14 structure functions and matrix elements of local operators. Besides reproducing well-known results, new sum rules for parity-violating polarized structure functions and new mass correction terms are obtained. |
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