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Vector Meson Dominance and Rho-Omega Mixing | | S. A. Coon
; M. D. Scadron
; | | Date: |
7 Aug 1998 | | Journal: | Phys.Rev. C58 (1998) 2958-2962 | | Subject: | nucl-th | | Affiliation: | New Mexico State University), M. D. Scadron (University of Arizona | | Abstract: | The scale of a phenomenologically successful charge-symmetry-violating nucleon-nucleon interaction, that attributed to meson exchange with a $Delta I =1$ rho-omega transition, is set by the Coleman-Glashow SU(2) breaking tadpole mechanism. A single tadpole scale has been obtained from symmetry arguments, electromagnetic meson and baryon measured mass splittings, and the observed isospin violating ($Delta I=1$) decay $omega o pi^+pi^-$. The hadronic realization of this tadpole mechanism lies in the $I = 1$ $a_0$ scalar meson. We show that measured hadronic and two-photon widths of the $a_0$ meson, with the aid of the Vector Meson Dominance model, recover the universal Coleman-Glashow tadpole scale. | | Source: | arXiv, nucl-th/9808014 | | Services: | Forum | Review | PDF | Favorites | |
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