Colour transparency and scaling properties of nuclear shadowing in deep inelastic scattering View Full Text


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Article Info

DATE

1991-12

AUTHORS

N. N. Nikolaev, B. G. Zakharov

ABSTRACT

We present the perturbative QCD analysis of nuclear shadowing in the deep inelastic scattering at smallx in terms of the spatial wave function ofq\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$\bar q$$ \end{document} fluctuations of virtual photons. The wave function formalism makes it quite obvious that shadowing is the scaling, rather than the higher twist, 1/Q2, effect, contrary to a numerous recent claims. We demonstrate explicitly how the scaling shadowing comes from the large, hadronic, size quarkantiquark pairs even in the limit ofQ2→∞, and why it should very slowly, ∞1/log (Q2/m2) decrease at very largeQ2. We argue in favor of the scaling triple-pomeron contribution to the nuclear shadowing and present predictions for a cross section of diffraction dissociation of virtual photons and for the mass spectrum of diffraction excitation, which can be checked at HERA and Fermilab. We predict strikingly different scaling properties of diffraction dissociation and nuclear shadowing for the longitudinal and transverse photons. Our, numerial predictions for shadowing are in good agreement with the recent EMC data. More... »

PAGES

607-618

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf01483577

DOI

http://dx.doi.org/10.1007/bf01483577

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1012423985


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