Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-09-29
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.
Brisudova Martina M.
Perry Robert J.
Szpigel Sergio
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