Determination of the strong coupling constant from the charmonium spectrum

Aida X. El-Khadra, George Hockney, Andreas S. Kronfeld, Paul B. Mackenzie

Research output: Contribution to journalArticle

Abstract

Lattice gauge theory techniques have recently achieved sufficient accuracy to permit a determination of the strong coupling constant from the 1P-1S splitting in the charmonium system, with all systematic errors estimated quantitatively. The present result is MS» (5 GeV)=0.174 0.012, or equivalently, MS» (4)=160-37+47 MeV (MS» denotes the modified minimal subtraction scheme).

Original languageEnglish (US)
Pages (from-to)729-732
Number of pages4
JournalPhysical review letters
Volume69
Issue number5
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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