Conference paper
New perspectives for QCD: near-conformal QCD and the novel effects of final-state interactions
Staneley J. Brodsky
; Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, USA
Abstract
The effective QCD charge extracted from t decay is remarkably constant at small momenta, implying the near-conformal behavior of hadronic interactions at small momentum transfer. The correspondence of large NC supergravity theory in higher-dimensional anti-de Sitter spaces with gauge theory in physical space-time also has interesting implications for hadron phenomenology in the conformal limit, such as constituent counting rules for hard exclusive processes. The utility of light-front quantization and light-front Fock wavefunctions for analyzing such phenomena and representing the dynamics of QCD bound states is reviewed. The novel effects of initial- and final-state interactions in hard QCD inclusive processes, including Bjorken-scaling single-spin asymmetries and the leading-twist diffractive and shadowing contributions to deep inelastic lepton-proton scattering are also discussed.
Keywords
hadronic interactions; deep inelastic lepton-proton scattering; supergravity theory; gauge theory; QCD; single-spin asymmetries
Hrčak ID:
305611
URI
Publication date:
1.3.2004.
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