Dynamic versus Static Structure Functions and Novel Diffractive Effects in QCD

Conference · Wed Nov 12 04:00:00 EST 2008

OSTI ID:940973

Brodsky, Stanley J

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.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 940973
• Report Number(s): SLAC-PUB-13454; arXiv:0811.0875
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
BREAKDOWN
COLOR
DEEP INELASTIC SCATTERING
DIFFRACTION
HEAVY IONS
HIGH ENERGY PHYSICS
PHYSICS
PROBABILITY
PROJECTILES
PROTONS
Phenomenology-HEP
HEPPH
HEPTH
QUANTUM CHROMODYNAMICS
QUARKS
RESCATTERING
STRUCTURE FUNCTIONS
TARGETS