Searching for $t\to cg$ at the Fermilab Tevatron

Abstract

We examine the experimental observability of the decay mode $t\to cg$ 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 $b\to s\gamma$ and the measured branching fraction for $t\to bW$, reaching $BF(t\to cg)\sim$ 15\% - 28\%. A data sample of 1~fb${}^{-1}$ (10~fb${}^{-1}$) at $\sqrt{s}=2$~TeV may probe the $t\to cg$ branching fraction to a level of 2\% (0.5\%).

arXiv comment12 pages, 2 figures, RevTeX, postscript files available via anonymous ftp at ftp://ucdhep.ucdavis.edu/han/top/tcgluon.ps, and fig#.ps

References in corpus (13)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Topcolor Assisted Technicolor
• Parton Distributions of the Proton
• Flavor Changing Scalar Interactions
• Flavour Changing Neutral Currents, Weak-Scale Scalars and Rare Top Decays
• Top-Quark Decay Via Flavor-Changing Neutral Currents at Hadron Colliders
• Constraining Anomalous Top Quark Couplings at the Tevatron
• Flavour changing top quark decay within the minimal supersymmetric standard model
• Probing the Couplings of the Top Quark to Gauge Bosons
• Effects of Top Compositeness
• Hints of New Flavor Physics at LEP?
• New Third-family Flavor Physics: Vertex Corrections

Cited by in corpus (62)

• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Single Top Production as a Window to Physics Beyond the Standard Model
• SUSY-induced FCNC top-quark processes at the Large Hadron Collider
• The Hunt for New Physics at the Large Hadron Collider
• Flavor-changing Top Quark Decays In R-Parity Violating SUSY
• New Supersymmetric Contributions to $t->cV$
• Top-quark rare decay $t\to ch$ in R-parity-violating SUSY
• Dimension-six CP-conserving operators of the third-family quarks and their effects on collider observables
• Top-Charm Associated Production in High Energy $e^{+}{e}^{-}$ Collisions
• Single Top Quark Production via FCNC Couplings at Hadron Colliders
• Direct Top Quark Production at Hadron Colliders as a Probe of New Physics
• Collider aspects of flavour physics at high Q
• Top-Quark Decay Via the Anomalous Coupling $\bar{t}c\gamma$ at Hadron Colliders
• Dimension-six CP-violating operators of the third-family quarks and their effects at colliders
• Next-to-leading order QCD corrections to the top quark decay via model-independent FCNC couplings
• Top quark physics in hadron collisions
• Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions
• Probing Topcolor-Assisted Technicolor from Top-Charm Associated Production at LHC
• Gauged Flavor Group with Left-Right Symmetry
• Anomalous t-c-g coupling: The connection between single top production and top decay
• Multilepton production via top flavour-changing neutral couplings at the CERN LHC
• Chromomagnetic Dipole Moment of the Top Quark Revisited
• Zt and γt production via top flavour-changing neutral couplings at the Fermilab Tevatron
• Top flavour-changing neutral coupling signals at a linear collider
• The anomalous chromomagnetic dipole moment of the top quark in the standard model and beyond
• Dimension six FCNC operators and top production at the LHC
• Supersymmetric QCD flavor changing top quark decay
• Flavour changing strong interaction effects on top quark physics at the LHC
• FCNC top quark production via anomalous tqV couplings beyond leading order
• Combined effects of strong and electroweak FCNC effective operators in top quark physics at the LHC
• The Top Forward Backward Asymmetry with general Z ' couplings
• Strong flavour changing effective operator contributions to single top quark production
• FCNC production of same sign Top quark pairs at the LHC
• Double Top Production at Hadronic Colliders
• Flavor changing t -> c l_1^- l_2^+ decay in the general two Higgs doublet model
• t -> c H^0 decay in the general two Higgs doublet model
• Next-to-leading order QCD corrections to the top quark decay via the Flavor-Changing Neutral-Current operators with mixing effects
• The rare top decay $t\to cg$ in topcolor assisted technicolor models
• Review of Properties of the Top Quark from Measurements at the Tevatron
• Searching for an anomalous $\bar{t}q\gamma$ coupling via single top quark production at a $\gamma \gamma$ collider
• 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
• Searches for anomalous $tqZ$ couplings from the trilepton signal of $tZ$ associated production at the 14 TeV LHC
• Top-Quark FCNC Decay t->cgg in Topcolor-assisted Technicolor Model
• Anomalous $tqZ$ coupling effects in rare B- and K-meson decays
• Search for t->ch at e+e- Linear Colliders
• Probing anomalous top quark couplings at eγcolliders
• Constraints on anomalous $tcZ$ coupling from $\bar{B}\to {\bar{K}}^{\ast }{\mu }^{+}{\mu }^{-}$ and $B_s\to {\mu }^{+}{\mu }^{-}$ decays
• Constraints on unparticle physics from the $gt\bar{t}$ anomalous coupling
• Anomalous $tq\gamma$ coupling effects in exclusive radiative B-meson decays
• Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider
• Higgs mediated Double Flavor Violating top decays in Effective Theories
• Ultraboosted $Zt$ and $\gamma t$ production at the HL-LHC and FCC-hh
• Model Independent Predictions for Rare Top Decays with Weak Coupling
• Using t -> b \bar{b} c to Search for New Physics
• Anomalous production of top quarks at CLIC+LHC based gamma p colliders
• Single top Quark Production in e-gamma Collisions and Testing Technicolor Models
• Soft-Gluon Corrections in FCNC Top-Quark Production via Anomalous Gluon Couplings
• Neutral top-pion and $t\gamma (z)$ production at the HERA and THERA colliders
• Single Top from Technipion Production
• Flavor changing scalar couplings and $t\gamma (Z)$ production at hadron colliders
• b b-bar Production on the Z Resonance and Implications for LEP2
• The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders