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 flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions
AU - Collaboration, D0
AU - Bertram, Iain
AU - Borissov, Guennadi
AU - Fox, Harald
AU - Williams, Mark
AU - Ratoff, Peter
AU - Love, Peter
AU - Sopczak, Andre
N1 - published by Phys. Lett. B
PY - 2010/9/27
Y1 - 2010/9/27
N2 - We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb^-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma_tgusigma_tgc gu) gc)
AB - We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb^-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma_tgusigma_tgc gu) gc)
U2 - 10.1016/j.physletb.2010.08.011
DO - 10.1016/j.physletb.2010.08.011
M3 - Journal article
VL - 693
SP - 81
EP - 87
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 2
ER -