More nonperturbative corrections to the fine and hyperfine splitting in the heavy quarkonium

Details More nonperturbative corrections to the fine and hyperfine splitting in the heavy quarkonium More nonperturbative corrections to the fine and hyperfine splitting in the heavy quarkonium

1996-05-28

arxiv.org/abs/hep-ph/9605424v2

Phys.Rev.D55:407,1997; Erratum-ibid.D59:099901,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, More self-contained and lengthier version without changing physical outputs. To be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.55.407 10.1103/

The leading nonperturbative effects to the fine and hyperfine splitting were
calculated some time ago. Recently, they have been used in order to obtain
realistic numerical results for the lower levels in bottomonium systems. We
point out that a contribution of the same order $O(\Lambda_{QCD}^4/m^3
\alpha_s^2)$ has been overlooked. We calculate it in this paper.

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