Dynamic versus Static Structure Functions and Novel Diffractive Effects in QCD

Initial- and final-state rescattering, neglected in the parton model, have a profound effect in QCD hard-scattering reactions, predicting single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions...

Full description

Saved in:
Bibliographic Details
Published in:AIP conference proceedings 2009-01, Vol.1105 (1), p.315-322
Main Author: Brodsky, Stanley J
Format: Article
Language:English
Subjects:
ASYMMETRY
B QUARKS
BREAKDOWN
C QUARKS
COLOR MODEL
COMPTON EFFECT
DEEP INELASTIC SCATTERING
DRELL MODEL
HEAVY ION REACTIONS
PARTICLE PRODUCTION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PIONS
PROTONS
QUANTUM CHROMODYNAMICS
RESCATTERING
SPIN
STRUCTURE FUNCTIONS
T QUARKS
WAVE FUNCTIONS
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Initial- and final-state rescattering, neglected in the parton model, have a profound effect in QCD hard-scattering reactions, predicting single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shadowing and non-universal antishadowing-leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also discuss the use of diffraction to materialize the Fock states of a hadronic projectile and test QCD color transparency, and anomalous heavy quark effects. The presence of direct higher-twist processes where a proton is produced in the hard subprocess can explain the large proton-to-pion ratio seen in high centrality heavy ion collisions. I emphasize the importance of distinguishing between static observables such as the probability distributions computed from the square of the light-front wavefunctions versus dynamical observables which include the effects of rescattering.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3122202