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Higher Twist Effects in Parton Fragmentation Functions

Guanghua Xu·Ed V. Hungerford·Larry Pinsky
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Abstract

We study twist expansions for parton fragmentation functions based on the definition of the twist as an invariant matrix element of a light-cone, bilocal operator. The results are then applied to a method which might be used to extract higher twist effects in the fragmentation sector using both $e^+ e^-$, and $e^- p$ collisions. We discuss how to apply the later measurements to experiments at the Jefferson National Acceleration Facility.

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Guanghua Xu, Ed V. Hungerford, Larry Pinsky. 2005-05-19. Higher Twist Effects in Parton Fragmentation Functions. https://arxiv.org/abs/nucl-th/0505060

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