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arXiv · hep-ph/0212044

The chirally-odd twist-3 distribution e(x)

A. V. Efremov·P. Schweitzer
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Abstract

Properties of the nucleon twist-3 distribution function e(x) are reviewed. It is emphasized that the QCD equations of motion imply the existence of a delta-function at x=0 in e(x), which gives rise to the pion-nucleon sigma-term. According to the resulting ``practical'' DIS sum rules the first and the second moment of e(x) vanish, a situation analogue to that of the pure twist-3 distribution function $\bar{g}_2(x)$.

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A. V. Efremov, P. Schweitzer. 2003-08-25. The chirally-odd twist-3 distribution e(x). https://doi.org/10.1088/1126-6708%2F2003%2F08%2F006

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