Compact Muon Solenoid
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| CMS-PAS-HIG-14-026 | ||
| Search for Associated Production of a Single Top Quark and a Higgs Boson in Leptonic Channels | ||
| CMS Collaboration | ||
| February 2015 | ||
| Abstract: A search for the production of a Higgs boson in association with a single top quark is presented, focusing on leptonic signatures provided by the $\mathrm{H}\rightarrow\mathrm{W}\mathrm{W}$ and $\mathrm{H}\rightarrow\tau\tau$ decay modes. Due to a strong interference of the two main contributing diagrams, the production cross section of this process benefits from a substantial enhancement in the case of negative values of the top-Higgs coupling, $C_{\mathrm{t}}$. The analysis exploits signatures with two same-sign and three leptons in the final state, and uses the full data sample collected with the CMS detector at the LHC at a center of mass energy of 8 TeV, which corresponds to an integrated luminosity of 19.7 $\pm$ 0.5 fb$^{-1}$. Multivariate techniques are used to discriminate the signal from the dominant backgrounds. The analysis yields a 95% confidence level upper limit on the single top quark plus Higgs boson production cross section of 6.7 times the expectation for $C_{\mathrm{t}} =$ -1, with an expected limit of 5.0. | ||
| Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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