The Heavy Quarkonium Spectrum at Order $mα_s^5 \ln α_s$

Details The Heavy Quarkonium Spectrum at Order $mα_s^5 \ln α_s$ The Heavy Quarkonium Spectrum at Order $mα_s^5 \ln α_s$

1999-10-05

arxiv.org/abs/hep-ph/9910238v2

Phys.Lett. B470 (1999) 215

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, 1 figure. Journal version. Minor explanatory remarks added

Scientific paper

10.1016/S0370-2693(99)01301-5

We compute the complete leading-log terms of the next-to-next-to-next-to-leading-order corrections to potential NRQCD. As a by-product we obtain the leading logs at $O(m\alpha_s^5)$ in the heavy quarkonium spectrum. These leading logs, when $\Lambda_{QCD} \ll m\alpha_s^2$, give the complete $O(m\alpha_s^5 \ln \alpha_s)$ corrections to the heavy quarkonium spectrum.

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