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

Abstract

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.

10 pages, 5 figures

References in corpus (17)

• A minimal set of top anomalous couplings
• Observation of Single Top-Quark Production
• Single top quark production at the Tevatron: threshold resummation and finite-order soft gluon corrections
• SUSY-induced FCNC top-quark processes at the Large Hadron Collider
• Higher-order soft gluon corrections in single top quark production at the LHC
• Deciphering top flavor violation at the LHC with B factories
• Collider aspects of flavour physics at high Q
• Single Top-Quark Production in Flavor-Changing Z' Models
• Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF
• Search for production of single top quarks via flavor-changing neutral currents at the Tevatron
• Study of ATLAS sensitivity to FCNC top decays
• Dimension six FCNC operators and top production at the LHC
• Combined effects of strong and electroweak FCNC effective operators in top quark physics at the LHC
• Single top-quark production by direct supersymmetric flavor-changing neutral-current interactions at the LHC
• Single top-quark production by strong and electroweak supersymmetric flavor-changing interactions at the LHC
• Contributions from dimension six strong flavor changing operators to top anti-top, top plus gauge boson, and top plus Higgs boson production at the LHC
• Future prospects of B physics

Cited by in corpus (6)

• MEtop - a generator for single top production via FCNC interactions
• New physics contributions to the forward-backward asymmetry at the Tevatron
• Probing the anomalous $tq\gamma$ couplings through single top production at the future lepton-hadron colliders
• Probing the anomalous tqgamma couplings in photon-proton collisions
• Studying flavor-changing neutral tqZ couplings: Current constraints and future prospects
• Investigation of the FCNC couplings between the top quark and the photon in $\gamma \gamma$ and ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the CLIC