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Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions

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Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions. / Collaboration, D0; Bertram, Iain; Borissov, Guennadi; Fox, Harald; Williams, Mark; Ratoff, Peter; Love, Peter; Sopczak, Andre.

In: Physics Letters B, Vol. 693, No. 2, 27.09.2010, p. 81-87.

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@article{1f0ce66094a84dd39a23fb7e1e9c71e9,
title = "Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions",
abstract = "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)",
author = "D0 Collaboration and Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Peter Love and Andre Sopczak",
note = "published by Phys. Lett. B",
year = "2010",
month = sep
day = "27",
doi = "10.1016/j.physletb.2010.08.011",
language = "English",
volume = "693",
pages = "81--87",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "2",

}

RIS

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 -