SU(2) symmetry breaking from QCD sum rules

E. Bagan; A. Bramon; S. Narison; N. Paver

doi:10.1016/0370-2693(84)90316-2

SU(2) symmetry breaking from QCD sum rules

E. Bagan, A. Bramon, S. Narison, N. Paver

Research output: Contribution to journal › Article › Research › peer-review

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Abstract

We discuss the determination of the (flavour) SU(2) symmetry breaking due to the u and d quark vacuum condensate ratio, 1 - 〈dd〉/〈uu〉 {reversed tilde equals} 0.022-0.027, from QCD sum rules. We also comment on the SU(2) breaking for the ωρ{variant}π couplings and its relevance in ω, φ{symbol} → π+π-π0 and ω, ρ{variant} → πγ decays. © 1984.

Original language	English
Pages (from-to)	463-467
Journal	Physics Letters B
Volume	135
Issue number	5-6
DOIs	https://doi.org/10.1016/0370-2693(84)90316-2
Publication status	Published - 16 Feb 1984

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abstract = "We discuss the determination of the (flavour) SU(2) symmetry breaking due to the u and d quark vacuum condensate ratio, 1 - 〈dd〉/〈uu〉 {reversed tilde equals} 0.022-0.027, from QCD sum rules. We also comment on the SU(2) breaking for the ωρ{variant}π couplings and its relevance in ω, φ{symbol} → π+π-π0 and ω, ρ{variant} → πγ decays. {\textcopyright} 1984.",

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AU - Paver, N.

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AB - We discuss the determination of the (flavour) SU(2) symmetry breaking due to the u and d quark vacuum condensate ratio, 1 - 〈dd〉/〈uu〉 {reversed tilde equals} 0.022-0.027, from QCD sum rules. We also comment on the SU(2) breaking for the ωρ{variant}π couplings and its relevance in ω, φ{symbol} → π+π-π0 and ω, ρ{variant} → πγ decays. © 1984.

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