FindingZ′bosons coupled preferentially to the third family at CERN LEP and the Fermilab Tevatron
Citations Over TimeTop 10% of 2001 papers
Abstract
${Z}^{\ensuremath{'}}$ bosons that couple preferentially to the third generation fermions can arise in models with extended weak $[\mathrm{SU}(2)\ifmmode\times\else\texttimes\fi{}\mathrm{SU}(2)]$ or hypercharge $[\mathrm{U}(1)\ifmmode\times\else\texttimes\fi{}\mathrm{U}(1)]$ gauge groups. We show that existing limits on quark-lepton compositeness set by the CERN LEP and Fermilab Tevatron experiments translate into lower bounds of the order of a few hundred GeV on the masses of these ${Z}^{\ensuremath{'}}$ bosons. Resonances of this mass can be directly produced at the Tevatron. Accordingly, we explore in detail the limits that can be set at Run II using the process $p\overline{p}\ensuremath{\rightarrow}{Z}^{\ensuremath{'}}\ensuremath{\rightarrow}\ensuremath{\tau}\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\tau}}e\ensuremath{\mu}.$ We also comment on the possibility of using hadronically decaying taus to improve the limits.
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