Chiral Symmetry in Light-front QCD
arXiv:hep-ph/0310095 · doi:10.1088/1126-6708/2004/04/045
Abstract
The definition of chiral transformations in light-front field theory is very different from the conventional form in equal-time formalism. We study the consistency of chiral transformations and chiral symmetry in light-front QCD and derive a complete new light-front axial-vector current for QCD. The breaking of chiral symmetry in light-front QCD is only associated with helicity flip interaction between quarks and gluons. Remarkably, the new axial-vector current does not contain the pion pole part so that the associate chiral charge smoothly describes pion transitions for various hadronic processes.
15 pages, no figure, JHEP style, added reference and corrected typos and some changed content
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