Measurement of the t-channel single top quark production cross section

Abazov, V. M. ; Mondal, N. K. ; et., al (2010) Measurement of the t-channel single top quark production cross section Physics Letters B, 682 (4-5). pp. 363-369. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.physletb.2009.11.038

Abstract

The D0 Collaboration reports direct evidence for electroweak production of single top quarks through the t-channel exchange of a virtual W boson. This is the first analysis to isolate an individual single top quark production channel. We select events containing an isolated electron or muon, missing transverse energy, and two, three or four jets from 2.3 fb-1 of pp̅ collisions at the Fermilab Tevatron Collider. One or two of the jets are identified as containing a b hadron. We combine three multivariate techniques optimized for the t-channel process to measure the t- and s-channel cross sections simultaneously. We measure cross sections of 3.14 +0.94-0.80 pb for the t-channel and 1.05±0.81 pb for the s-channel. The measured t-channel result is found to have a significance of 4.8 standard deviations and is consistent with the standard model prediction.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:92416
Deposited On:30 May 2012 13:55
Last Modified:30 May 2012 13:55

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