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Flavor Changing Neutral Currents in top production and decays

Searches for flavor changing neutral currents (FCNC) in top production and decay in CMS using data collected by the Compact Muon Solenoid (CMS) experiment at $\sqrt{s}$ = 7 and 8 TeV corresponding to an integrated luminosity of around 5 fb$^{-1}$ and 20 fb$^{-1}$ are presented. FCNC searches are con...

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Detalles Bibliográficos
Autor principal: Kim, Tae Jeong
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/556/1/012029
http://cds.cern.ch/record/1754174
Descripción
Sumario:Searches for flavor changing neutral currents (FCNC) in top production and decay in CMS using data collected by the Compact Muon Solenoid (CMS) experiment at $\sqrt{s}$ = 7 and 8 TeV corresponding to an integrated luminosity of around 5 fb$^{-1}$ and 20 fb$^{-1}$ are presented. FCNC searches are conducted to probe $tqZ$, $tq\gamma$, $tqH$, and $tgq$ interactions in various channels. There is no excess of signal observed over the data. The upper limit of $\mathcal{B}(t \to u\gamma)$ $<$ 0.0161\%, $\mathcal{B}(t \to ug)$ $<$ 0.0355\%, $\mathcal{B}(t \to Zq)$ $<$ 0.05\% and $\mathcal{B}(t \to cH)$ $<$ 0.56\% at 95\% confidence level are obtained. Future prospects of FCNC searches with the upgraded detector at 14 TeV are also presented.