arXiv:1312.7028·v2·High Energy Physics — Experiment
Reevaluation of the parton distribution of strange quarks in the nucleon
The HERMES Collaboration: A. Airapetian · N. Akopov · Z. Akopov · E.C. Aschenauer · W. Augustyniak · A. Avetissian · E. Avetisyan · S. Belostotski · H.P. Blok · A. Borissov · V. Bryzgalov · J. Burns
Abstract
An earlier extraction from the HERMES experiment of the polarization-averaged parton distribution of strange quarks in the nucleon has been reevaluated using final data on the multiplicities of charged kaons in semi-inclusive deep-inelastic scattering obtained with a kinematically more comprehensive method of correcting for experimental effects. General features of the distribution are confirmed, but the rise at low x is less pronounced than previously reported.