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A VMD Based, Nonet and SU(3) Symmetry Broken Model for Radiative Decays of Light Mesons
Author(s) -
M. Benayoun
Publication year - 2005
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/839836
Subject(s) - physics , particle physics , radiative transfer , symmetry breaking , meson , pseudoscalar , chiral symmetry breaking , quantum mechanics
We present a VMD based model aiming to describe all radiative decays of light mesons. We show that the SU(3) breaking mechanism proposed by Bando, Kugo and Yamawaki (BKY), supplemented by nonet symmetry breaking in the pseudoscalar sector are sufficient to provide a nice description of all data, except the K*{sup {+-}} radiative width. It is also shown that nonet symmetry breaking has effects which cannot be disentangled from those produced by coupling of glue to the {eta}{prime} meson. Coupling of glue to {eta} is not found to be required by the data. Assuming the K*{sup {+-}} radiative width is indeed at its presently accepted value necessitates to supplement the BKY breaking in a way which finally preserves an equivalence statement between the VMD approach to radiative decays and the Wess-Zumino-Witten Lagrangian.

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