η′ Meson as a pseudoscalar gluonium

V. A. Novikov, M. A. Shifman, A. I. Vainshtein, V. I. Zakharov

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

QCD sum rules induced by the current Gμνaμνa constructed from gluon field operators are derived. Saturating the sum rules by η′ rough estimates for the η′ mass and its residue are found. The difference between the η′ and typical quark states such as ρ{variant} is noted. Breaking of the opeator expansion by the instanton effects is discussed.

Original languageEnglish (US)
Pages (from-to)347-350
Number of pages4
JournalPhysics Letters B
Volume86
Issue number3-4
DOIs
StatePublished - Oct 8 1979

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