A determination of quark weak couplings at petra energies |
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| Authors: | W. Bartel,D. Cords,P. Dittman,R. Eichler,R. Felst,D. Haidt,H. Krehbiel,B. Naroska,L.H. O&#x Neill,P. Steffen,H. Wenninger,Y. Zhang,E. Elsen,M. Helm,A. Petersen,P. Warming,G. Weber,C. Yanagisawa |
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| Affiliation: | Deutsches Electronen-Synchrotron DESY, Hamburg, Germany;II. Institut für Experimentalphysik der Universität Hamburg, Germany;Physikalisches Institut der Universität Heidelberg, Germany |
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| Abstract: | Data on hadron production by e+e? annihilation at c.m. energies between 12 and 36.6 GeV have been collected using the JADE detector. They have been analysed in terms of single-photon and weak neutral-current exchange assuming production of quark-antiquark pairs with only d, u, s, c and b quarks to produce values for the quark weak neutral-current couplings. A further analysis in terms of the Glashow-Salam-Weinberg theory produced the result, sin2θW = 0.22 ± 0.08. The theory has therefore been tested in a new energy domain and within the context of the neutral weak couplings of the first, second and third generation quarks. |
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| Keywords: | JADE Collaboration |
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