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Free accessOther version: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.102.151801
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Titles listSearch for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF
Titles listSearch for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF
Scientific Article
unige:38536 
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Search for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF |
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| Collaboration | With : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin | |
| Published in | Physical Review Letters. 2009, vol. 102, no. 15, p. 151801 | |
| 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 σ(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)<3.9×10−4 and B(t→c+g)<5.7×10−3. | |
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Article (Published version) (185 Kb) - Free access Other version: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.102.151801 |
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| Structures | ||
| Citation (ISO format) | CDF COLLABORATION. Search for Top-Quark Production via Flavor-Changing Neutral Currents in W+1 Jet Events at CDF. In: Physical Review Letters, 2009, vol. 102, n° 15, p. 151801. https://archive-ouverte.unige.ch/unige:38536 |
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