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The QCD Potential at O(1/m2): Complete spin-dependent and spin-independent result
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Within an effective field theory framework, we obtain an expression, with O(1/m2) accuracy, for the energies of the gluonic excitations between heavy quarks, which holds beyond perturbation theory. For the singlet heavy-quarkantiquark 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/m2) 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 nonperturbative regime.
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PINEDA, Antonio (Pineda Ruiz) and VAIRO, Antonio. The QCD Potential at O(1/m2): Complete spin-dependent and spin-independent result. Physical Review D. 2001. Vol. 63, num. 5, pags. 054007-1-054007-16. ISSN 0556-2821. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/12462