Search for the flavor-changing neutral-current decay t-->Zq in pp collisions at sqrt[s] = 1.96 TeV.

Journal article

We report a search for the flavor-changing neutral-current decay of the top quark t-->Zq (q=u, c) in pp collisions at sqrt[s]=1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb(-1) collected by the CDF II detector. This decay is strongly suppressed in the standard model and an observation of a signal at the Fermilab Tevatron would be an indication of physics beyond the standard model. Using Z+ > or = 4 jet final state candidate events, with and without an identified bottom quark jet, we obtain an upper limit of B(t-->Zq) < 3.7% at 95% C.L.

Authors: Aaltonen, T; Adelman, J; Akimoto, T; Albrow, MG; Alvarez González, B

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 101
• Issue: 19
• Pages: 192002
• Publication date: 2008-11-01
• DOI: 10.1103/physrevlett.101.192002
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English
• Keywords: CDF Collaboration