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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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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
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author Kim, Tae Jeong
author_facet Kim, Tae Jeong
author_sort Kim, Tae Jeong
collection CERN
description 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.
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spelling cern-17541742019-09-30T06:29:59Zdoi:10.1088/1742-6596/556/1/012029http://cds.cern.ch/record/1754174engKim, Tae JeongFlavor Changing Neutral Currents in top production and decaysDetectors and Experimental TechniquesSearches 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.CMS-CR-2014-188oai:cds.cern.ch:17541742014-08-27
spellingShingle Detectors and Experimental Techniques
Kim, Tae Jeong
Flavor Changing Neutral Currents in top production and decays
title Flavor Changing Neutral Currents in top production and decays
title_full Flavor Changing Neutral Currents in top production and decays
title_fullStr Flavor Changing Neutral Currents in top production and decays
title_full_unstemmed Flavor Changing Neutral Currents in top production and decays
title_short Flavor Changing Neutral Currents in top production and decays
title_sort flavor changing neutral currents in top production and decays
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1088/1742-6596/556/1/012029
http://cds.cern.ch/record/1754174
work_keys_str_mv AT kimtaejeong flavorchangingneutralcurrentsintopproductionanddecays