Pion Loop Contribution to Rho-Omega Mixing and Mass Splitting

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dc.creatorMitchell, K. L.
dc.creatorTandy, P. C.
dc.date1996-07-15
dc.date.accessioned2026-07-07T11:15:50Z
dc.date.available2026-07-07T11:15:50Z
dc.descriptionWe study the self-energy amplitudes for the rho-omega meson system produced by an effective field theory model at the quark level characterized by a finite range quark-quark interaction and an isospin breaking bare quark mass difference $m_u - m_d$. Dynamical effects associated with confinement and dressing of quarks and the finite size of the produced $\bar{q}q$ meson modes are treated. Parameters of this approach, previously constrained by soft pion physics, are here supplemented in a minimal way to reproduce $m_ω$ and $g_{ρππ}$. Calculations are carried out up to the one pion loop level and the predictions for rho-omega mixing, mass splitting, the rho width and the symmetry breaking omega-pi-pi coupling constant and form factor are presented. The contribution of the direct $ω\rightarrow ππ$ process relative to the $ω\rightarrow ρ\rightarrow ππ$ process is discussed within this model.
dc.description30 pages, 10 figures, RevTeX document with PostScript figures, uuencoded
dc.identifierhttps://arxiv.org/abs/nucl-th/9607025
dc.identifierhttp://arxiv.org/abs/nucl-th/9607025
dc.identifierPhys.Rev.C55:1477-1491,1997
dc.identifierdoi:10.1103/PhysRevC.55.1477
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192514
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePion Loop Contribution to Rho-Omega Mixing and Mass Splitting
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