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Determination of quark and gluon vacuum condensates from τ-lepton decay data (1988)

Dominguez, C. A. ; Solà, J.

Springer

The European physical journal 40 (1988), S. 63-75

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ISSN: 1434-6052

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The values of the gluon and four-quark vacuum condensates are estimated using recent experimental data on the semileptonic τ-lepton decays τ→vτ+nπ, which determine the vector and axialvector hadronic spectral functions. An optimal estimate is achieved through a systematic combined use Finite Energy, Laplace and Gaussian transform QCD sum rules. As a byproduct, the values of the dimensiond=8 vacuum condensates in the vector and axial-vector channels are also estimated.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01559718

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