Light Hybrid Mesons in QCD

Abstract

Including the radiative perturbative corrections and the short distance tachyonic gluon mass effects which mimic the ones of UV renormalons, we re-estimate the decay amplitudes, masses and widths of light hybrid mesons from QCD spectral sum rules. We show that the effects are tiny and confirm the previous lowest order results. We discuss the phenomenological impacts of our results for the vector hybrids.

Typos fixed, references updated; the final version version to appear in Phys. Lett. B. 6 pages, Latex, espcrc1.sty is required (included). The complete paper is also available via the www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/

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