Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-18
JHEP 9804:017,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 4 figures, LaTeX2e, uses JHEP.cls (included) and epsfig
Scientific paper
10.1088/1126-6708/1998/04/017
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.
Dasgupta Mahananda
Smye Graham E.
Webber Bryan R.
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