Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for Production of Single Top Quarks Via tcg and tug Flavor-Changing-Neutral-Current Couplings
AU - Abazov, V. M.
AU - Bertram, Iain
AU - Borissov, Guennadi
AU - Fox, Harald
AU - Ratoff, Peter
AU - Sopczak, Andre
PY - 2007/11/6
Y1 - 2007/11/6
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevLett.99.191802
DO - 10.1103/PhysRevLett.99.191802
M3 - Journal article
VL - 99
SP - 191802
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
ER -