1996/08/28 by A. V. Sidorov, Sidorov, A. V., M. V. Tokarev +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9608461
10 pages, latex, 7 figures
arxiv created 1996/08/28 · arxiv updated 2009/11/30
The x- and Q2-dependences of the Gottfried sum rule SG(x,Q2) based on the experimental data on proton and deuteron structure functions are studied. The dependence of SG(x,Q2) on Q2 for low x points to flavour asymmetry of sea quark distributions. For the first time, the coefficients c1, c2 of the expansion of SG(x,Q2) in αS/π up to second order are evaluated through the phenomenological analysis of NMC and H1 data. It is found that c1 is negative while c2 is positive. The obtained result is in disagreement with QCD predictions for these coefficients. We suggest measuring the low x-dependence of the F2D deuteron structure function at HERA in order to study the Q2-dependence of the Gottfried sum rule.