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arXiv · hep-ph/9803382

Power Corrections to Fragmentation Functions in Non-Singlet Deep Inelastic Scattering

M. Dasgupta·G. E. Smye·B. R. Webber
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Abstract

We investigate the power-suppressed corrections to the fragmentation functions of the current jet in non-singlet deep inelastic lepton-hadron scattering. The current jet is defined by selecting final-state particles in the current hemisphere in the Breit frame of reference. Our method is based on an analysis of one-loop Feynman graphs containing a massive gluon, which is equivalent to the evaluation of leading infrared renormalon contributions. We find that the leading corrections are proportional to $1/Q^2$, as in $e^+e^-$ annihilation, but their functional forms are different. We give quantitative estimates based on the hypothesis of universal low-energy behaviour of the strong coupling.

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M. Dasgupta, G. E. Smye, B. R. Webber. 1998-03-18. Power Corrections to Fragmentation Functions in Non-Singlet Deep Inelastic Scattering. https://doi.org/10.1088/1126-6708%2F1998%2F04%2F017

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