Observation of single top-quark production with the CDF II experiment
We present the observation of electroweak single top-quark production using up to 3.2 fb{sup -1} of data collected by the CDF experiment. Lepton plus jets candidate events are classified by four parallel analysis techniques: one likelihood discriminant, one matrix-element discriminant, one decision-tree discriminant, and one neural-network discriminant. These outputs are combined with a super discriminant based on a neural-network analysis in order to improve the expected sensitivity. In conjunction with one neural-network discriminant using a complementary dataset of MET plus jets events with a veto on identified leptons we observe a signal consistent with the standard model but inconsistent with the background-only model by 5.0 standard deviations, with a median expected sensitivity in excess of 5.9 standard deviations.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1007270
- Report Number(s):
- FERMILAB-CONF-10-487-E; TRN: US1101301
- Journal Information:
- Submitted to Il Nuovo Cimento, Conference: Presented at TOP 2010 3rd International Workshop on Top Quark Physics, Bruges, Belgium, 31 May - 4 Jun 2010
- Country of Publication:
- United States
- Language:
- English
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