2011/09/20 by C. L. McGivern, McGivern, C. L.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1109.4365
openalex publication_date 2011/09/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a search for flavor changing neutral currents (FCNC) in decays of top quarks. The analysis is based on a search for tt→ℓ'νℓℓ+jets (ℓ, ℓ' = e,μ) final states using 4.1 \rm fb-1 of integrated luminosity of pp collisions at √(s) = 1.96 \rm TeV. We extract limits on the branching ratio B(t→ Zq) (q = u, c quarks), assuming anomalous tuZ or tcZ couplings. We do not observe any sign of such anomalous coupling and set a limit of B < 3.2% at 95% C.L.