Shadowing, binding, and off-shell effects in nuclear deep-inelastic scattering

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.1154· OSTI ID:7015376

Kulagin, S A ^[1]; Piller, G ^[2]; Weise, W ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
2. Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, South Australia, Australia 5005 (Australia)

We present a unified description of nuclear deep-inelastic scattering (DIS) over the whole region 0[lt][ital x][lt]1 of the Bjorken variable. Our approach is based on a relativistically covariant formalism which uses analytical properties of quark correlators. In the laboratory frame it naturally incorporates two mechanisms of DIS: (i) scattering from quarks and antiquarks in the target and (ii) production of quark-antiquark pairs followed by interactions with the target. We first calculate structure functions of the free nucleon and develop a model for the quark spectral functions. In this model mechanism (ii) is responsible for the sea quark content of the nucleon while mechanism (i) governs the valence part of the nucleon structure functions. We find that the coherent interaction of [ital [bar q]q] pairs with nucleons in the nucleus leads to shadowing at small [ital x] and discuss this effect in detail. In the large [ital x] region DIS takes place mainly on a single nucleon. There we focus on the derivation of the convolution model. We point out that the off-shell properties of the bound nucleon structure function give rise to sizable nuclear effects.

• OSTI ID: 7015376
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 50:2; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEEP INELASTIC SCATTERING
SHADOW EFFECT
NUCLEONS
STRUCTURE FUNCTIONS
QUARKS
SPECTRAL FUNCTIONS
DIFFERENTIAL CROSS SECTIONS
LEPTON REACTIONS
PAIR PRODUCTION
QUANTUM CHROMODYNAMICS
QUARKONIUM
RELATIVISTIC RANGE
BARYONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SCATTERING
662340* - Hadron Interactions- (1992-)
663420 - Lepton-Induced Reactions & Scattering- (1992-)