Search for production of single top quarks via tcg and tug flavor-changing-neutral-current couplings

Abazov, V. M. ; Mondal, N. K. ; et., al (2007) Search for production of single top quarks via tcg and tug flavor-changing-neutral-current couplings Physical Review Letters, 99 (19). 191802_1-191802_8. ISSN 0031-9007

Full text not available from this repository.

Official URL: http://prl.aps.org/abstract/PRL/v99/i19/e191802

Related URL: http://dx.doi.org/10.1103/PhysRevLett.99.191802

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 pp̅ 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 κgc/Λ and κgu/Λ, where κg define the strength of tcg and tug couplings, and Λ defines the scale of new physics. The limits at 95% C.L. are κgc/Λ<0.15 TeV-1 and κgu/Λ<0.037 TeV-1.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:92558
Deposited On:01 Jun 2012 11:38
Last Modified:01 Jun 2012 11:38

Repository Staff Only: item control page