Search for the flavor-changing neutral-current decay t→Zq in pp? collisions at s=1.96TeV
Journal
Physical Review Letters
Journal Volume
101
Journal Issue
19
Date Issued
2008
Author(s)
Aaltonen, T. et al. (CDF Collaboration)
Abstract
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.
Type
journal article