Effects of Massive Gluons on Quarkonia in Light-Front QCD

Details Effects of Massive Gluons on Quarkonia in Light-Front QCD Effects of Massive Gluons on Quarkonia in Light-Front QCD

1997-09-29

arxiv.org/abs/hep-ph/9709479v1

Phys.Lett. B421 (1998) 334-340

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures (eps files) included. Submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(97)01556-6

A constituent parton picture of hadrons with logarithmic confinement arises naturally in light-front QCD when the hamiltonian is computed using a perturbative renormalization group; however, rotational symmetry is not manifest as a simple kinematic symmetry. Relevant operators must typically be fine-tuned when a perturbative renormalization group is used, and in light-front field theory such operators contain functions of longitudinal momenta. We explore the possibility that a gluon mass operator with simple longitudinal momentum dependence may improve approximate kinematic rotational symmetry, as revealed by the potential between heavy quarks.

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