Top-quark decay via R-parity violating interactions at the Tevatron

Abstract

We consider the top-quark decay $t\to \tilde{\tau }b$ and $t\to \tau b{\tilde{\chi }}_1^0$ via explicit R-parity violating interactions in SUSY theories. We discuss the observability of those channels at the Fermilab Tevatron collider. The existing Tevatron data indicate a 95% confidence level upper bound on the coupling to be less than 0.94(0.63) for a long-lived (short-lived) ${\tilde{\chi }}_1^0$ with $m_{\tilde{\tau }}=70$ GeV. At Tevatron Run II with an integrated luminosity of 2 (10) fb${}^{-1}$, one can obtain a 2$\sigma$ constraint as 0.38 (0.24) for a long-lived ${\tilde{\chi }}_1^0$ and 0.29(0.19) for a short-lived ${\tilde{\chi }}_1^0$, beyond the current indirect limit.

16 pages, 7 eps figures. Using LaTeX with axodraw. LSP decay mode included; more refs.; to appear in PLB

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Cited by in corpus (13)

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• Measurement of the top quark pair cross section with ATLAS in pp collisions at sqrt(s) = 7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton
• Probing R-violating top quark decays at hadron colliders
• Measurement of ttbar production in the tau + jets topology using ppbar collisions at sqrt{s} = 1.96 TeV
• Measuring R-parity-violating couplings in dilepton production at the LHC
• Single Slepton Production in association with a single Top Quark at the Tevatron and LHC
• Signals from R-parity violating top quark decays at LHC
• Probing R-violating top quark decays at the NLC
• Lightest-neutralino decays in R_p-violating models with dominant lambda^{prime} and lambda couplings
• Tagging Sneutrino Resonances at a Linear Collider with Associated Photons
• Effects of lepton number violating interactions on $t\bar{t}$ production at NLC
• 3- and 2-body supersymmetric processes: predictions, challenges and prospectives