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Search for Production of Single Top Quarks Via tcg and tug Flavor-Changing-Neutral-Current Couplings

Abazov, V. M. and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ratoff, Peter and Sopczak, Andre (2007) Search for Production of Single Top Quarks Via tcg and tug Flavor-Changing-Neutral-Current Couplings. Physical Review Letters, 99. p. 191802. ISSN 1079-7114

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Abstract

We search for the production of single top quarks via flavor-changing-neutral-current couplings of a gluon to the top quark and a charm (c) or up (u) quark. We analyze 230 pb-1 of lepton+jets data from p collisions at a center of mass energy of 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider. We observe no significant deviation from standard model predictions, and hence set upper limits on the anomalous coupling parameters / and /, where g define the strength of tcg and tug couplings, and defines the scale of new physics. The limits at 95% C.L. are /<0.15 TeV-1 and /<0.037 TeV-1.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 11252
Deposited By: Dr Iain Bertram
Deposited On: 12 Aug 2008 14:12
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 14:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/11252

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