3,024 research outputs found
The QCD Analysis of the Structure Functions and Effective Nucleon Mass
On the basis of the target mass corrections to structure functions of
deep-inelastic scattering of leptons, we evaluate effective nucleon mass that
turns out to be twice for deep-inelastic scattering on the nucleus
target and equals for the hydrogen target.Comment: LATEX, 6 pages, no figure
Nuclear effects and higher twists in F3 structure function
We analyze the CCFR collaboration iron target data on the xF3 structure
function making particular emphasis on the extraction of the higher twist
contributions from data. Corrections for nuclear effects are applied in order
to extract data on the structure function of the isoscalar nucleon. Our
analysis confirms the observation made earlier, that the higher twist terms
depend strongly on the level to which QCD perturbation theory analysis is
applied. We discuss the impact of nuclear effects on the higher twist term as
well as on the QCD scale parameter Lambda_{\bar{MS}} extracted from the fit to
data.Comment: 16 pages, 2 figure
Constraints on "Second Order Fixed Point" QCD from the CCFR Data on Deep Inelastic Neutrino-Nucleon Scattering
The results of LO {\it Fixed point} QCD (FP-QCD) analysis of the CCFR data
for the nucleon structure function are presented. The
predictions of FP-QCD, in which the Callan-Symanzik function admits a
{\it second order} ultraviolet zero at are in good
agreement with the data. Constraints for the possible values of the
function parameter regulating how fast tends to its
asymptotic value are found from the data. The corresponding
values of are also determined. Having in mind our recent " First
order fixed point" QCD fit to the same data we conclude that in spite of the
high precision and the large kinematic range of the CCFR data they
cannot discriminate between QCD and FP-QCD predictions for .Comment: 8 pages, LaTe
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