%0 Journal Article
%T V-A Hadronic Tau Decays: a Laboratory for the QCD Vacuum
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Narison, Stephan
%< avec comité de lecture
%Z 04-054
%@ 0370-2693
%J Physics Letters B
%I Elsevier
%V 624
%N 3-4
%P 223 - 232
%8 2005
%D 2005
%Z hep-ph/0412152
%R 10.1016/j.physletb.2005.08.007
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
%Z Physics [physics]/High Energy Physics - Experiment [hep-ex]Journal articles
%X ALEPH/OPAL data on the V-A spectral functions from hadronic tau decays are used in connection with a set of Laplace transform sum rules (LSR) for fixing the size of the QCD vacuum condensates up to dimension 18. Our results favour the ones from large-N_c QCD within the Minimal Hadronic Approximation (MHA) and show a violation of about a factor 2-5 of the vacuum saturation estimate of the dimension-six to -ten condensates. We scrutinize the different determinations of the QCD vacuum condensates using tau-decays data. After revisiting some of the existing results, we present coherent values of the condensates from different methods.
%G English
%L hal-00266461
%U https://hal.science/hal-00266461
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2