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Precision electroweak physics at LEP and the top-quark mass

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Il Nuovo Cimento A (1971-1996)

Summary

A status of precision measurements of electroweak observables at LEP is presented. The main improvements in 1995 are: final results from the 1993 lineshape scan and new preliminary results on the Z→b\(\bar b\) partial width. All other measurements benefit from increased statistics. Progress was made on the calculation of the Bhabha cross-section, and on the estimate ofα(M 2Z ). Finally, the top quark is now established and its mass measured directly. Agreement at the level of 10−3 is found for all purely leptonic or inclusive hadronic quantities with the SM predictions using the measured top mass.R b is measured to 0.8%; the preliminary average is 3.2σ away from the SM prediction.

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Authors and Affiliations

  1. L.P.N.H.E. Ecole Polytechnique, IN2P3-CNRS, 91128, Palaiseau, France

    A. Blondel

  2. PPE Division, CERN, Geneva, Switzerland

    A. Blondel

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  1. A. Blondel
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Blondel, A. Precision electroweak physics at LEP and the top-quark mass. Nuov Cim A 109, 771–785 (1996). https://doi.org/10.1007/BF02731711

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