Non-perturbative QCD effects at large momentum transfers |
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Authors: | L Baulieu J Ellis MK Gaillard WJ Zakrzewski |
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Institution: | CERN, Geneva, Switzerland |
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Abstract: | We calculate the simplest one-instanton correction to the perturbative QCD prediction for e+e? annihilation to hadrons. At high centre-of-mass energies Q we find a contribution to the total cross section from a simple fermion loop of the form where Nf is the number of quark flavours. The numerical value of this contribution is O(1) for Q ~ 1 to 2 GeV. |
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