Novel Perspectives for Hadron Physics

Abstract

I discuss several novel and unexpected aspects of quantum chromodynamics. These include: (a) the nonperturbative origin of intrinsic strange, charm and bottom quarks in the nucleon at large light-cone momenta x; the breakdown of pQCD factorization theorems due to the lensing effects of initial- and final-state interactions; (b) important corrections to pQCD scaling for inclusive reactions due to processes in which hadrons are created at high transverse momentum directly in the hard processes and their relation to the baryon anomaly in high-centrality heavy-ion collisions; and (c) the nonuniversality of quark distributions in nuclei. I also discuss some novel theoretical perspectives in QCD: (a) light-front holography -- a relativistic, color-confining, first approximation to QCD based on the AdS/CFT correspondence principle; (b) the principle of maximum conformality -- a method which determines the renormalization scale at finite order in perturbation theory yielding scheme independent results; (c) the replacement of quark and gluon vacuum condensates by "in-hadron condensates" and how this helps to resolves the conflict between QCD vacuum and the cosmological constant.

Invited talk, presented at the International Symposium on Subnuclear Physics: Past, Present and Future, held at the Pontifical Academy of Sciences in the Vatican from 30 Oct. to 2 Nov. 2011

References in corpus (11)

• Light-Front Holography: A First Approximation to QCD
• k_T factorization is violated in production of high-transverse-momentum particles in hadron-hadron collisions
• Light and heavy mesons in a soft-wall holographic approach
• The Charm Parton Content of the Nucleon
• Measurement of Single and Double Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target
• Transverse Spin Structure of the Nucleon through Target Single Spin Asymmetry in Semi-Inclusive Deep-Inelastic $(e,e^{\prime }{\pi }^{\pm })$ Reaction at Jefferson Lab
• Diffractive Higgs Production from Intrinsic Heavy Flavors in the Proton
• Isospin splittings of doubly heavy baryons
• Connection between the Sivers function and the anomalous magnetic moment
• Higgs Hadroproduction at Large Feynman x
• Dynamic versus Static Hadronic Structure Functions