Constraints on the electroweak universal parameters and the top and Higgs masses from updated LEP/SLC data

Details Constraints on the electroweak universal parameters and the top and Higgs masses from updated LEP/SLC data Constraints on the electroweak universal parameters and the top and Higgs masses from updated LEP/SLC data

1994-11-24

arxiv.org/abs/hep-ph/9411388v1

Mod.Phys.Lett.A10:2553-2570,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, uuencoded compressed tar file of LaTeX file and 7 EPS files (uses cite.sty and psfig.sty), PostScript version of com

Scientific paper

10.1142/S0217732395002696

A global analysis is performed using the latest data from LEP and SLC. Constraints on the electroweak universal parameters ($S,T,U$) and on the masses of the top quark and Higgs boson within the Standard Model (SM) are investigated. The uncertainties due to the QCD and QED effective couplings, $\alpha_s(\mz)$ and $\bar{\alpha}(\mmz)$, are examined in detail. Even though the mean value of $S$ is increased to be consistent with zero, the naive Technicolor models are still disfavored due to its reduced error. Within the SM, we find the 90\,\%CL constraints; $133\gev

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