The Off Shell $ρ$-$ω$ Mixing in the QCD Sum Rules

Details The Off Shell $ρ$-$ω$ Mixing in the QCD Sum Rules The Off Shell $ρ$-$ω$ Mixing in the QCD Sum Rules

1993-04-26

arxiv.org/abs/nucl-th/9304021v1

Phys.Rev.C49:452-463,1994

Physics

Nuclear Physics

Nuclear Theory

26 pages + 11 figures (PostScript)

Scientific paper

10.1103/PhysRevC.49.452

The $q^2$ dependence of the $\rho-\omega$ mixing amplitude is analyzed with
the use of the QCD sum rules and the dispersion relation. Going off shell the
mixing decreases, changes sign at $q^2 \simeq 0.4 m_{\rho}^2 > 0$ and is
negative in the space like region. Implications of this result to the isospin
breaking part of the nuclear force are discussed.

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