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Novel Aspects of QCD in Leptoproduction | | S. J. Brodsky
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2 Nov 2004 | | Journal: | Eur.Phys.J. A24S1 (2005) 129-135 | | Subject: | hep-ph | | Affiliation: | SLAC | | Abstract: | I review several topics in electroproduction which test fundamental aspects of QCD. These include the role of final-state interactions in producing diffractive leptoproduction processes, the shadowing of nuclear structure functions, and target-spin asymmetries. The antishadowing of nuclear structure functions is shown to be quark-flavor specific, suggesting that some part of the anomalous NuTeV result for $sin^2 heta_W$ could be due to the non-universality of nuclear antishadowing for charged and neutral currents. I also discuss the physics of the heavy-quark sea, hidden color in nuclear wavefunctions, and evidence for color transparency for nuclear processes. The AdS/CFT correspondence connecting superstring theory to superconformal gauge theory has important implications for hadron phenomenology in the conformal limit, including an all-orders demonstration of counting rules for hard exclusive processes, as well as determining essential aspects of hadronic light-front wavefunctions. | | Source: | arXiv, hep-ph/0411029 | | Services: | Forum | Review | PDF | Favorites | |
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