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Impact of FCNC top quark interactions on BR(t -> b W)

We study the effect that FCNC interactions of the top quark will have on the branching ratio of charged decays of the top quark. We have performed an integrated analysis using Tevatron and B-factories data and with just the further assumption that the CKM matrix is unitary we can obtain very restrictive bounds on the strong and electroweak FCNC branching ratios Br(t -> q X) < 4.0 10^{-4}, where X is any vector boson and a sum in q = u,c is implied.

preprint2009arXivOpen access
P. M. FerreiraR. Santos
hep-ph
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Open access2 authors1 topic
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P. M. FerreiraR. Santos

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