η′ Meson as a pseudoscalar gluonium

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

doi:10.1016/0370-2693(79)90854-2

η′ Meson as a pseudoscalar gluonium

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

Physics and Astronomy (Twin Cities)

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Abstract

QCD sum rules induced by the current G_μν^aḠ_μν^a 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 language	English (US)
Pages (from-to)	347-350
Number of pages	4
Journal	Physics Letters B
Volume	86
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(79)90854-2
State	Published - Oct 8 1979

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AU - Novikov, V. A.

AU - Shifman, M. A.

AU - Vainshtein, A. I.

AU - Zakharov, V. I.

PY - 1979/10/8

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AB - QCD sum rules induced by the current GμνaḠμνa 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.

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η′ Meson as a pseudoscalar gluonium

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