Full Formula for Heavy Quarkonium Energy Levels at Next-to-next-to-next-to-leading Order
Full Formula for Heavy Quarkonium Energy Levels at Next-to-next-to-next-to-leading Order
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DOI:
10.1016/j.nuclphysb.2014.10.010
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发表时间:
2014-08
期刊:
影响因子:
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通讯作者:
Y. Kiyo;Y. Sumino
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文献类型:
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作者:
Y. Kiyo;Y. Sumino
We derive a full formula for the energy level of a heavy quarkonium state identified by the quantum numbers n, ℓ, s and j, up to O (α s 5 m) and O (α s 5 m log α s) in perturbative QCD. The QCD Bethe logarithm is given in a one-parameter integral form. The rest of the formula is given as a combination of rational numbers, transcendental numbers (π, ζ (3), ζ (5)) and finite sums (besides the 3-loop constant a¯ 3 of the static potential whose full analytic form is still unknown). A derivation of the formula is given.