Observation of electroweak single top-quark production with the CDF experiment
We present the observation of electroweak single top-quark production using 3.2 fb{sup -1} of data collected by the CDF experiment. Candidate events are selected for further classification 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 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. We also present the most current value of the CKM matrix-element V{sub tb}.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 986634
- Report Number(s):
- FERMILAB-CONF-09-737-PPD; TRN: US1006400
- Journal Information:
- PoS HCP2009:083,2009, Conference: Prepared for 20th Hadron Collider Physics Symposium 2009 (HCP 2009), Evian, France, 16-20 Nov 2009
- Country of Publication:
- United States
- Language:
- English
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