High twist contribution to the longitudinal structure function $F_L$ at high $x$

Details High twist contribution to the longitudinal structure function $F_L$ at high $x$ High twist contribution to the longitudinal structure function $F_L$ at high $x$

1999-02-04

arxiv.org/abs/hep-ph/9902241v1

Eur.Phys.J.C12:587-593,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LATEX, 9 figures (EPS)

Scientific paper

10.1007/s100520000179

We performed NLO QCD fit of combined SLAC/BCDMS/NMC DIS data at high $x$. Model independent x-shape of high twist contribution to structure function $F_L$ is extracted. Twist-4 contribution is found to be in fair agreement with the predictions of infrared renormalon model. Twist-6 contribution exhibits weak tendency to negative values, although in the whole is compatible with zero within errors.

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