Chiral Symmetry in Light-front QCD

Details Chiral Symmetry in Light-front QCD Chiral Symmetry in Light-front QCD

2003-10-08

arxiv.org/abs/hep-ph/0310095v4

JHEP 0404 (2004) 045

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, no figure, JHEP style, added reference and corrected typos and some changed content

Scientific paper

10.1088/1126-6708/2004/04/045

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.

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