A search for Flavour Changing Neutral current top quark rare decays t->qZ in pp interactions at sqrt(S)=8TeV in the ATLAS experiment

Author: Archil Durglishvili
Annotation:

A search for FCNC decays of top quarks produced in pairs was performed using data collected by the ATLAS experiment at a centre-of-mass energy of sqrt(s) = 8 TeV and corresponding to an integrated luminosity of 20.3 fb−1 recorded in 2012. The search for the t->qZ decay mode was performed by studying top-quark pair production with one top quark decaying according to the Standard Model and the other according to the FCNC. The tt‾->bWqZ events were studied in dilepton channel: leptonic decay of Z boson and hadronic decay of W boson were considered. No evidence for a signal is found and an observed (expected) upper limit on the t->qZ branching ratio of 2.9 x 10−3 (2.7 x 10−3 ) is set at the 95% confidence level.

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მოხსენების სლაიდები [ka]
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