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Non-perturbative QCD vacuum frome +e−→I=1 hadron data

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Zeitschrift für Physik C Particles and Fields

Abstract

We estimate the gluon vacuum condensate α s 〈F 2〉 from thee +e−→I=1 hadron cross-section known below 2 GeV using moment sum rules ratios. We obtain α s 〈F 2〉= (3.9±1.0)10−2GeV4. We also re-evaluate the contribution of the dimension-six vacuum condensates to the above sum rule and test the factorization hypothesis of the four-quark operator. Useful rules for the evaluation of the dimension-six vacuum condensates contributions are given.

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Author notes

  1. R. Tarrach

    Present address: Depto de Fisica Teorica, Universidad de Valencia, Spain

Authors and Affiliations

  1. Centre de Physique Théorique, CNRS, U.E.R. de Luminy, Case 907, F-13288, Marseille Cedex 2, France

    G. Launer

  2. CERN, CH-1211, Geneva 23, Switzerland

    S. Narison & R. Tarrach

Authors
  1. G. Launer
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  2. S. Narison
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  3. R. Tarrach
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Additional information

1 Boursier DGRST

On leave of absence from: Dept. de Physique Mathématique Univ. des Sciences et Techniques du, Languedoc, (Equipe de recherche associée au CNRS) Place E. Bataillon, F-34060 Montpellier France

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Launer, G., Narison, S. & Tarrach, R. Non-perturbative QCD vacuum frome +e−→I=1 hadron data. Z. Phys. C - Particles and Fields 26, 433–439 (1984). https://doi.org/10.1007/BF01452571

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  • DOI: https://doi.org/10.1007/BF01452571

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