Non-perturbative parton mass for the gluon

Details Non-perturbative parton mass for the gluon Non-perturbative parton mass for the gluon

2001-10-15

arxiv.org/abs/hep-lat/0110114v1

Nucl.Phys.Proc.Suppl. 106 (2002) 242-244

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(spectrum),3 pages, 3 figures

Scientific paper

A gauge invariant, non-local observable is constructed in pure gauge theory, which is identical to the gluon propagator in a particular gauge, permitting to define a non-perturbative parton mass for the gluon. This mass can be shown to be related to the 1P-1S mass splitting of heavy quarkonia. Preliminary numerical results for 3d SU(2) yield m_A=0.37(6)g^2, while from the \bar{b}b spectrum one infers m_A\approx 420 MeV for QCD.

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