Compact Muon Solenoid
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| CMS-PAS-TOP-14-003 | ||
| Search for anomalous single top quark production in | ||
| CMS Collaboration | ||
| 2014 | ||
| Abstract: A search for single top quark production through flavor-changingneutral currents in the anomalous $tq\gamma$ vertex is presented in proton-proton collisions at a center-of-mass energy of 8 TeV. The analysis is based on a data-set corresponding to an integrated luminosity of 19.1 fb$^{-1}$ collected with the CMS detector. The search is performed on events with one isolated muon and jets in the final state. No evidence for a signal is observed. Upper limits on the strengths of the anomalous couplings at leading order for vertices involving a top quark, a photon, and another up-like quark are set at \%$ confidence level to be $\kappa_{tu\gamma}<0.028$ and $\kappa_{tc\gamma}<0.094$. The corresponding upper bounds on the top quark decay branching ratios are $BR(t\rightarrow u+\gamma)<0.0161\%$ and $BR(t\rightarrow c+\gamma)<0.182\%$. | ||
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CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
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These preliminary results are superseded in this paper, JHEP 04 (2016) 035. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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