Searches for flavor changing neutral currents in top production and decay using data collected by the Compact Muon Solenoid (CMS) experiment at $\sqrt{ s}$ = 7 and 8 TeV are presented, corresponding to an integrated luminosity of around 5 fb$^{ -1}$ and 20 fb$^{ -1}$. FCNC searches are conducted to probe $tqZ$, $tq\gamma$, $tqH$, and $tgq$ interactions in various channels. By the time of the 38$^{ th}$ ICHEP conference in 2016, the upper limits on $\mathcal{ B}(t \to u\gamma)$ $<$ 0.013%, $\mathcal{ B}(t \to ug)$ $<$ 0.036%, $\mathcal{ B}(t \to uZ)$ $<$ 0.05% and $\mathcal{ B}(t \to uH)$ $<$ 0.42% at the 95% confidence level had been obtained by the CMS collaboration.
Categories: hep-ex hep-ph