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

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

1996-06-04

arxiv.org/abs/hep-ph/9606231v1

Phys.Lett. B385 (1996) 311-316

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 2 figures, RevTeX, postscript files available via anonymous ftp at ftp://ucdhep.ucdavis.edu/han/top/tcgluon.ps, and

Scientific paper

10.1016/0370-2693(96)00843-X

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 $b\rightarrow s \gamma$ 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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