On the phenomenology of a Z' coupling only to third-family fermions

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\bar b final states.

36 pages, LaTeX, including 12 figures

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• Implications of Generalized Z-Z' Mixing
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• Two-portal Dark Matter
• Using the (Modified) Matrix Element Method to constrain $L_{\mu }-L_{\tau }$ Interactions
• Lepton flavor violation decays ${\tau }^{-}\to {\mu }^{-}{P}_1{P}_2$ in the topcolor-assisted technicolor model and the littlest Higgs model with $T$ parity
• Lepton flavor violating semileptonic $\tau$ decays $\tau \to lP(V)$ in a topcolor scenario
• Non-universal gauge boson $Z^{\prime }$ and the spin correlation of top quark pair production at $e^{-}{e}^{+}$ colliders
• Rare decays $B_s\to l^{+}{l}^{-}$ and $B\to K{l}^{+}{l}^{-}$ in \the topcolor-assisted technicolor model
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• A heavy neutral gauge boson near the Z boson mass pole via third generation fermions at the LHC
• Probing topcolor-assisted technicolor models from like-sign tau pair production in e gamma collisions
• Testing lepton number violation with the reaction e,e -> mu, nu, q, q