QCD Evolution of Nuclear Structure Functions at Large X: EMC Effect and Cumulative Processes

QCD evolution of nuclear structure functions at large x is reviewed within the an approach based on QCD factorization for hard processes and multiquark flucton model. In this approach, x > 1 region of the nuclear structure functions is intimately related with x < 1 region due to manifestation...

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Bibliographic Details
Published inPhysics of particles and nuclei letters Vol. 15; no. 4; pp. 384 - 386
Main Author Kim, V. T.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2018
Springer Nature B.V
Subjects
Admixtures
Evolution
Hadrons
Nuclear structure
Particle and Nuclear Physics
Physics
Physics and Astronomy
Physics of Elementary Particles and Atomic Nuclei. Theory
Quantum chromodynamics
Quarks
cumulative processes
nuclear structure functions
EMC-effect
multiquark fluctons
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Summary:QCD evolution of nuclear structure functions at large x is reviewed within the an approach based on QCD factorization for hard processes and multiquark flucton model. In this approach, x > 1 region of the nuclear structure functions is intimately related with x < 1 region due to manifestation of quark and gluon degrees of freedom in nuclei. Properties of QCD evolution and observed EMC-ratio for nuclear structure functions at x < 1 result in an admixture of hard extra sea quark distribution. This extra nuclear quark sea provides a bump above unity for EMC-ratio at small x and becomes dominant in the nuclear quark sea for cumulative region x > 1. It leads to a striking prediction, confirmed by data, for the same spectrum slopes of all cumulative hadrons in nuclear fragmentation region.
ISSN:1547-4771
1531-8567
DOI:10.1134/S154747711804012X