The gωϱπ coupling constant from QCD sum rules

QCD sum rules for the vertex function of two vector and one axial vector currents are used to calculate the coupling constant g ωϱπ . The obtained value, g ωϱπ ≈ 17 GeV −1, is in good agreement with experimental data.

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Bibliographic Details
Published in:Physics letters. B 1983-03, Vol.122 (5), p.423-426
Main Authors: Eletsky, V.L., Ioffe, B.L., Kogan, Ya.I.
Format: Article
Language:English
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Description
Summary:QCD sum rules for the vertex function of two vector and one axial vector currents are used to calculate the coupling constant g ωϱπ . The obtained value, g ωϱπ ≈ 17 GeV −1, is in good agreement with experimental data.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(83)91595-2