Journal ArticleDOI
Spectral function sum rules in quantum chromodynamics (II). Flavour components of the electromagnetic current
TLDR
In this article, Das, Mathur, and Okubo sum rules are replaced by new finite-energy sum rules which equate differences of definite integrals of the various flavour components of the electromagnetic spectral function to functions explicitly calculated in perturbative QCD.About:
This article is published in Nuclear Physics.The article was published on 1980-07-14. It has received 22 citations till now. The article focuses on the topics: Sum rule in quantum mechanics & Sum rule in integration.read more
Citations
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Journal ArticleDOI
QCD analysis of the tau hadronic width
TL;DR: In this paper, the total τ hadronic width can be accurately calculated using analyticity and the operator product expansion, and the theoretical analysis of this observable is updated to include all available perturbative and nonperturbative corrections.
Journal ArticleDOI
Testing QCD with τ decays
F. Le Diberder,Antonio Pich +1 more
TL;DR: In this paper, the invariant mass distribution of the hadronic state in τ decay can be used for testing fundamental aspects of the strong interactions, using standard QCD techniques, and they provide a direct way to simultaneously measure α s ( m τ 2 ) and the parameters characterizing the non-perturbative dynamics, allowing for a better control of the theoretical errors in the determination of α s(m τ 2 ).
Journal ArticleDOI
QCD Formulation of the tau Decay and Determination of Lambda (MS)
Stephan Narison,Antonio Pich +1 more
TL;DR: In this paper, a simple formulation of the inclusive and exclusive semi-hadronic decays of the tau lepton using QCD-duality finite energy sum rules (FESRs) was presented.
Journal ArticleDOI
Light quark masses in quantum chromodynamics and chiral symmetry breaking
TL;DR: In this paper, the authors derived model independent lower bounds for the sum of effective quark masses from the combination of the spectral representation properties of the hadronic axial currents two-point functions and their behavior in the deep euclidean region.
References
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Journal ArticleDOI
QCD and resonance physics. theoretical foundations
TL;DR: In this paper, a systematic study is made of the non-perturbative effects in quantum chromodynamics, where the basic object is the two-point functions of various currents and the terms of this series are shown to be of two distinct types.
Journal ArticleDOI
Ultraviolet Behavior of Non-Abelian Gauge Theories
David J. Gross,Frank Wilczek +1 more
TL;DR: In this paper, it was shown that a wide class of non-Abelian gauge theories have, up to calculable logarithmic corrections, free-field-theory asymptotic behavior.
Journal ArticleDOI
Reliable Perturbative Results for Strong Interactions
TL;DR: In this article, the authors show that perturbation theory is arbitrarily good for the deep Euclidean Green's functions of any Yang-Mills theory and of many Yang Mills theories with fermions.
Journal ArticleDOI
Conservation of Isotopic Spin and Isotopic Gauge Invariance
Chen Ning Yang,Robert L. Mills +1 more
TL;DR: In this article, it was pointed out that the usual principle of invariance under isotopic spin rotation is not consistant with the concept of localized fields, and the possibility of having invariance in local isotope spin rotations was explored.
Journal ArticleDOI
QCD and Resonance Physics: Applications
TL;DR: In this article, the dispersion charmonium theory was extended to include power terms due to the nonperturbative effects of QCD, and an estimate for the gluonic vacuum expectation value was derived.