Dimensional structural constants from chiral and conformal bosonization of QCD
نویسندگان
چکیده
We derive the dimensional non-perturbative part of the QCD e ective action for scalar and pseudoscalar meson elds by means of chiral and conformal bosonization. The related structural coupling constants L5 and L8 of the chiral lagrangian are estimated using general relations which are valid in a variety of chiral bosonization models without explicit reference to model parameters. The asymptotics for large scalar elds in QCD is elaborated, and model-independent constraints on dimensional coupling constants of the e ective meson lagrangian are evaluated. We determine also the interaction between scalar quarkonium and the gluon density and obtain the scalar glueball-quarkonium potential. ||||||||||||Supported by Deutsche Forschungsgemeinschaft under contract 436 RUS 113-29. Supported by Deutsche Forschungsgemeinschaft under contract Eb 139/1-2. Supported by RFBR (Grant No. 95-02-05346a), by INTAS (Grant No. 93-283ext) and by GRACENAS (Grant No. 95-0-6.3-13). Supported by the Graduiertenkolleg `Structure, Precision Tests and Extensions of the Standard Model of Elementary Particle Physics'. On leave of absence from Department of Theoretical Physics, St.-Petersburg State University, 198904 St.-Petersburg, Russia,
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