Novel QCD Effects from Initial and Final State Interactions

Conference · Wed Sep 12 04:00:00 EDT 2007

OSTI ID:915359

Brodsky, Stanley J

Initial-state and final-state interactions which are conventionally neglected in the parton model, have a profound effect in QCD hard-scattering reactions. The effects, which arise from gluon exchange between the active and spectator quarks, cause leading-twist single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, and the breakdown of the Lam-Tung relation in Drell-Yan reactions. Diffractive deep inelastic scattering also leads to nuclear shadowing and non-universal antishadowing of nuclear structure functions through multiple scattering reactions in the nuclear target. Factorization-breaking effects are particularly important for hard hadron interactions since both initial-state and final-state interactions appear. Related factorization breaking effects can also appear in exclusive electroproduction reactions and in deeply virtual Compton scattering. None of the effects of initial-state and final-state interactions are incorporated in the light-front wavefunctions of the target hadron computed in isolation.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 915359
• Report Number(s): SLAC-PUB-12805; arXiv:0709.2229
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREAKDOWN
COMPTON EFFECT
DEEP INELASTIC SCATTERING
ELECTROPRODUCTION
FACTORIZATION
FINAL-STATE INTERACTIONS
GLUONS
HADRONS
MOMENTUM TRANSFER
MULTIPLE SCATTERING
NUCLEAR STRUCTURE
Phenomenology-HEP
HEPPH
HEPTH
QUANTUM CHROMODYNAMICS
QUARKS
TARGETS