2019 Impact factor 2.176
Hadrons and Nuclei
Open Access
Eur. Phys. J. A 24, s1.129-s1.135 (2005)
DOI: 10.1140/epjad/s2005-05-023-9

Novel aspects of QCD in leptoproduction

Stanley J. Brodsky

Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, USA


(Received 24 September 2004 / Published online 08 February 2005)

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 sin2θW 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.



© Società Italiana di Fisica, Springer-Verlag 2005