Gluon condensate from superconvergent QCD sum rule

1999/03/23 by Francisco Ynduráin, F. J. Yndurain · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-1573(99)00079-4

published as Phys.Rept. 320 (1999) 287-293 · plain TeX, no figures

arxiv created 1999/03/23 · openalex publication_date 1999/10/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Sum rules for the nonperturbative piece of correlators (specifically, the vector current correlator) are discussed. The sum rule subtracting the perturbative part is of the superconvergent type. Thus it is dominated by the bound states and low energy production cross section. It leads to a determination of the gluon condensate of <α_s G²> = 0.048 ± 0.039 GeV⁴

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