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Heavy Quarkonium Spectrum at ${\cal O}(\alpha_s^5m_q)$ and Bottom/Top Quark Mass Determination

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arxiv hep-ph/0204290 v2 pith:JKTZJVAG submitted 2002-04-25 hep-ph

classification hep-ph
keywords massquarkalphabottomenergyheavyquarkoniumresonance
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present the next-to-next-to-next-to-leading ${\cal O}(\alpha_s^5m_q)$ result for the ground state energy of a heavy quarkonium system. On the basis of this result we determine the bottom quark mass from $\Upsilon(1S)$ resonance and provide an explicit formula relating the top quark mass to the resonance energy in $t\bar t$ threshold production.

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