The QCD potential at O(1/m^2): Complete spin-dependent and spin-independent result

Details The QCD potential at O(1/m^2): Complete spin-dependent and spin-independent result The QCD potential at O(1/m^2): Complete spin-dependent and spin-independent result

2000-09-12

arxiv.org/abs/hep-ph/0009145v3

Phys.Rev. D63 (2001) 054007; Erratum-ibid. D64 (2001) 039902

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, revtex, former Eqs. (27) and (28) fixed

Scientific paper

10.1103/PhysRevD.64.039902

Within an effective field theory framework, we obtain an expression, with O(1/m^2) accuracy, for the energies of the gluonic excitations between heavy quarks, which holds beyond perturbation theory. For the singlet heavy quark--antiquark energy, in particular, we also obtain an expression in terms of Wilson loops. This provides, twenty years after the seminal work of Eichten and Feinberg, the first complete expression for the heavy quarkonium potential up to O(1/m^2) for pure gluodynamics. Several errors present in the previous literature (also in the work of Eichten and Feinberg) have been corrected. We also briefly discuss the power counting of NRQCD in the non-perturbative regime.

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