Observation of the Associated Production of a Single Top Quark and a W Boson in pp Collisions at √s=8 TeV
By S. Chatrchyan, A. Apresyan, A. Bornheim, J. Bunn, Y. Chen, E. Marco, Javier Mauricio Duarte, D. Kcira, Alex Mott, H. Newman and 9 more. 2014
224 citations recorded by the source corpus.
The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 fb^(−1) of proton-proton collisions at √s=8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant tt background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4±5.4 pb , in agreement with the standard model prediction.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/0c45f587c7b07c08b675baef320838bb118e9369
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In Nuclear and High Energy Physics
Citations in the corpus
- Measurement of the t-channel single-top-quarkproduction cross section and of the |Vtb| CKM matrixelement in pp collisions at √s = 8 TeV (2014, methodology): “Single-top-quark tW production has been recently observed at √ s = 8 TeV by the Compact Muon Solenoid (CMS) collaboration [14], while observation of s-channel production was reported at the Tevatron [15].”
- Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV (2017, background): “• Cross sections of the simulated processes: An uncertainty of 16, 50 and 20% is assumed in the cross section of the tt [60], single top quark [61, 62], and the combined”