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VOLUME 43 (1986) | ISSUE 12 | PAGE 557
A scalar meson is a dilaton in QCD
A scalar meson/dilaton appears in QCD in a conformal bosonization of the generating functional of QCD for quark currents. The dynamics of ?r and σ mesons is described by an effective Lagrangian like that in the linear sigma model. The mass of the sigma meson is determined substantially by a gluon condensate.