Evidence for production of single top quarks and first direct measurement of |Vtb|
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. M. | |
| dc.date | 2006-12-21 | |
| dc.date | 2007-04-10 | |
| dc.date.accessioned | 2026-07-07T11:58:20Z | |
| dc.date.available | 2026-07-07T11:58:20Z | |
| dc.description | The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to separate signal from background and measure sigma(ppbar->tb+X,tqb+X) = 4.9 +- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the CKM matrix element that describes the Wtb coupling and find 0.68 < |Vtb| <= 1 at 95% C.L. within the standard model. | |
| dc.description | This version accepted for publication by PRL | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0612052 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0612052 | |
| dc.identifier | Phys.Rev.Lett.98:181802,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.98.181802 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206191 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Evidence for production of single top quarks and first direct measurement of |Vtb| | |
| dc.type | text |