Flavor Changing Neutral Current searches in the top quark sector
June 05, 2017
June 13, 2017
Flavor changing neutral current (FCNC) interactions in top quark are highly suppressed in the Standard Model. Therefore, any measurable branching ratio for top FCNC decays would be an indication of new physics. In this article, searches for FCNC interactions in top quark production and decay by the ATLAS and CMS experiments at the LHC are presented. Searches in t $\rightarrow$ qH, t $\rightarrow$ q$\gamma$ and t $\rightarrow$ qZ decays, and in top quark production in qg $\rightarrow$ t or q $\rightarrow$ tg are summarized. None of the FCNC searches yielded positive results and exclusion limits on branching ratios, coupling strengths and cross-sections are obtained.
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