1998/08/05 by Arkady Vainshtein, Vainshtein, Arkady
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9808226
LaTex, 11 pages, 2 figures. Talk presented at the 3rd workshop on Continious Advances in QCD, University of Minnesota, Minneapolis, April 16-19, 1998
arxiv created 1998/08/05 · arxiv updated 2009/11/30
The 't Hooft model (two-dimensional QCD in the limit of large number of colors) is used as a testground for calculations of nonleptonic and semileptonic inclusive widths of heavy flavors based on the operator product expansion (OPE). The OPE-based predictions up to terms \cal O(1/mQ4), inclusively, are confronted with the "phenomenological" results, obtained by summation of all open exclusive decay channels, one by one, a perfect match is found. The issue of duality violations is discussed, the amplitude of oscillating terms is estimated. The method is applied to the realistic case of hadronic τ decays.