On the phenomenology of a Z' coupling only to third-family fermions
A. A. Andrianov, P. Osland, A. A. Pankov, N. V. Romanenko, J. Sirkka
Abstract
The phenomenology of an additional U(1) neutral gauge boson Z' coupled to the third family of fermions is discussed. One might expect such a particle to contribute to processes where taus, b and t quarks are produced. Precision data from LEP1 put severe constraints on the mixing and heavy-boson mass. We find that the effects of such a particle could not be observed at hadronic colliders, be it at the Tevatron or the LHC, because of the QCD background. At LEP2 and future e+e- linear colliders, one could instead hope to observe such effects, in particular for b b final states.
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