Aaltonen, T;
Adelman, J;
Akimoto, T;
Gonzalez, BA;
Amerio, S;
Amidei, D;
Anastassov, A;
... CDF Collaboration; + view all
(2009)
Search for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF.
Physical Review Letters
, 102
(15)
, Article 151801. 10.1103/PhysRevLett.102.151801.
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Abstract
We report on a search for the non-standard-model process u(c)+g -> t using pp collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2 fb(-1). The candidate events are classified as signal-like or backgroundlike by an artificial neural network. The observed discriminant distribution yields no evidence for flavor-changing neutral current top-quark production, resulting in an upper limit on the production cross section sigma(u(c)+g -> t)< 1.8 pb at the 95% C.L. Using theoretical predictions we convert the cross section limit to upper limits on flavor-changing neutral current branching ratios: B(t -> u+g)< 3.9x10(-4) and B(t -> c+g)< 5.7x10(-3).
| Type: | Article |
|---|---|
| Title: | Search for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.102.151801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.102.151801 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | EP COLLISIONS, DECAYS, PHYSICS, HERA |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/152376 |
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