The NuTeV Anomaly, Neutrino Mixing, and a Heavy Higgs

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  • 14 October 2002
Abstract
Recent results from the NuTeV experiment at Fermilab and the deviation of the Z invisible width, measured at LEP/SLC, from its Standard Model (SM) prediction suggest the suppression of neutrino-Z couplings. We perform fits to Z-pole and NuTeV observables with the oblique correction parameters S, T, and the Z-nu-nu coupling suppression parameter epsilon. We obtain excellent agreement with the data, including the anomalies, with non-zero values of the oblique corrections and epsilon. This result points to a much larger Higgs boson mass than previously obtained through SM global fits.

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