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CompositeZ-boson and CP violation in the processe + e -→Zγ⋆ |
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| Authors: | H Czyz K Koŀodziej M Zraŀek |
| Institution: | 1. Rudjer Bo?kovi? Institute, YU-41001, Zagreb, Croatia, Yugoslavia 2. Institute of Theoretical Physics and Astrophysics, University of Cape Town, 7700, Rondebosch, South Africa 3. Sektion Physik, Universit?t München, D-8000, München, Federal Republic of Germany 4. Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany |
| Abstract: | QCD duality sum rules are applied to the calculation of theB-parameter forN=1 supergravity-induced local operators. Using the chiral realization of local operators, the duality region has been found and the tree-level coupling constant determined. The result is in full accordance with a related calculation of theB-parameter in the standard model by Pich and de Rafael and support it. The result is an order of magnitude smaller than the one obtained by using vacuum saturation. Consequences of softened constraints are discussed. |
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