Rho-Omega Mixing via QCD Sum Rules with Finite Mesonic Widths

Abstract

Based on the analysis of both Borel and Finite-Energy QCD sum rules, the inclusion of finite mesonic widths leads to a dramatic effect on the predictions for the momentum dependence of the rho-omega mixing matrix element. It is shown that the rho-omega mixing matrix element traditionally discussed in the literature, has the same sign and similar magnitude in the space-like region as its on-shell value. This contrasts the zero-width result where the mixing matrix element is typically of opposite sign in the space-like region.

10 pages. Revised manuscript accepted for publication. This and related papers may also be obtained from http://www.phys.washington.edu/~derek/Publications.html

References in corpus (7)

• Valid QCD Sum Rules for Vector Mesons in Nuclear Matter
• Rho-omega Mixing and the Pion Electromagnetic Form-Factor
• Rho - omega mixing in chiral perturbation theory
• Rho-Omega Mixing Off Shell and Charge Symmetry Breaking In the N-N Potential
• The Mixed-Isospin Vector Current Correlator in Chiral Perturbation Theory and QCD Sum Rules
• Two Model-Independent Results for the Momentum Dependence of Rho-Omega Mixing
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• Isospin-Breaking Vector Meson Decay Constants From Continuous Families of Finite Energy Sum Rules
• Finite-width effects on Delta baryons in QCD Sum Rules
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• Rho - Omega Splitting and Mixing in Nuclear Matter
• Isospin Breaking Effects in the Extraction of Isoscalar and Isovector Spectral Functions From $e^{+}{e}^{-}\to hadrons$
• Temperature and Density Effects on the Nucleon Mass Splitting
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• Instanton Effects in QCD Sum Rules for the $0^{++}$ Hybrid