Dynamic versus Static Hadronic Structure Functions

Conference · Fri Jan 09 04:00:00 EST 2009 · Nucl.Phys.A827:327c-332c,2009

OSTI ID:945283

Brodsky, Stanley J.

'Static' structure functions are the probabilistic distributions computed from the square of the light-front wavefunctions of the target hadron. In contrast, the 'dynamic' structure functions measured in deep inelastic lepton-hadron scattering include the effects of rescattering associated with the Wilson line. Initial- and final-state rescattering, neglected in the parton model, can have a profound effect in QCD hard-scattering reactions, producing single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam-Tung relation in Drell-Yan reactions, nuclear shadowing, and non-universal nuclear antishadowing|novel leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also review how 'direct' higher-twist processes--where a proton is produced in the hard subprocess itself--can explain the anomalous proton-to-pion ratio seen in high centrality heavy ion collisions.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: DOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 945283
• Report Number(s): SLAC-PUB-13507; arXiv:0901.0781
• Conference Information: Journal Name: Nucl.Phys.A827:327c-332c,2009
• 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
DEEP INELASTIC SCATTERING
HEAVY IONS
NUCLEI
PHYSICS
PROTONS
Phenomenology-HEP
HEPPH
HEPTH
QUANTUM CHROMODYNAMICS
RESCATTERING
SCATTERING
STRUCTURE FUNCTIONS
TARGETS