Abstract.
We report on the extraction of the higher twist contributions to \(F_2\) and \(R ={\sigma_L}/{\sigma_T}\) from global NLO and NNLO QCD fits to lepton nucleon scattering data over a wide range of \(Q^2\). The NLO fits require both target mass and higher twist contributions at low \(Q^2\). However, in the NNLO analysis, the data are described by the NNLO QCD predictions (with target mass corrections) without the need for any significant contributions from higher twist effects. An estimate of the difference between NLO and NNLO parton distribution functions is obtained.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 7 October 1999 / Revised version: 9 December 1999 / Published online: 3 February 2000
Rights and permissions
About this article
Cite this article
Yang, U., Bodek, A. Studies of higher twist and higher order effects in NLO and NNLO QCD analysis of lepton-nucleon scattering data on \(F_2\) and \(R ={\sigma_L}/{\sigma_T}\) . Eur. Phys. J. C 13, 241–245 (2000). https://doi.org/10.1007/s100520000320
Issue Date:
DOI: https://doi.org/10.1007/s100520000320