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Searching for $t \to c g$ at the Fermilab Tevatron

T. Han·K. Whisnant·B. -L. Young·X. Zhang
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Abstract

We examine the experimental observability of the decay mode $t \rightarrow c g$ at the Fermilab Tevatron via the flavor-changing neutral current vertex $t \bar c g$. We find that with the existing data, one should be able to probe the $t \bar c g$ coupling to a value smaller than indirect limits previously obtained from $b\rightarrow s γ$ and the measured branching fraction for $t\rightarrow bW$, reaching $BF(t \rightarrow cg) \sim$ 15\% - 28\%. A data sample of 1~fb$^{-1}$ (10~fb$^{-1}$) at $\sqrt{s}=2$~TeV may probe the $t \rightarrow c g$ branching fraction to a level of 2\% (0.5\%).

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T. Han, K. Whisnant, B. -L. Young, X. Zhang. 1996-06-04. Searching for $t \to c g$ at the Fermilab Tevatron. https://doi.org/10.1016/0370-2693(96)00843-x

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