Top-Quark Decay Via the Anomalous Coupling $\bar{t}c\gamma$ at Hadron Colliders

Abstract

We determine the constraints on the anomalous top-quark coupling associated with the flavor-changing neutral current vertex $\bar{t}c\gamma$ from the limits on the $b$-quark rare decay $b\to s\gamma$ and non-standard top-quark decays. Based on these constraints, we discuss the experimental observability of the rare decay mode $t\to c\gamma$, both at the Fermilab Tevatron with a luminosity-upgrade and at the LHC.

arXiv comment19 pages, 8 figures, RevTeX, postscript files available via anonymous ftp: ftp://ucdhep.ucdavis.edu/han/top/ (get paper_top.ps and fig*.ps)

References in corpus (17)

• Observation of Top Quark Production in Pbar-P Collisions
• Theoretical Uncertainties and Phenomenological Aspects of $B\to X_s\gamma$ Decay
• Parton Distributions of the Proton
• Scheme Independence of the Effective Hamiltonian for $b\to s\gamma$ and $b\to sg$ Decays
• Flavor Changing Scalar Interactions
• Leading Order QCD Corrections to $b\to s\gamma$ and $b\to sg$ Decays in Three Regularization Schemes
• Flavour Changing Neutral Currents, Weak-Scale Scalars and Rare Top Decays
• A Heavy Top Quark and the $Zb\bar{b}$ Vertex in Non-Commuting Extended Technicolor
• 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
• Searching for $t\to cg$ at the Fermilab Tevatron
• Top-Charm Strong Flavor-Changing Neutral Currents at the Tevatron
• Effects of Top Compositeness
• Z -> b\bar{b} Versus Dynamical Electroweak Symmetry Breaking involving the Top Quark
• Using $b\to s\gamma$ to Probe Top Quark Couplings

Cited by in corpus (63)

• Flavor Changing Effects in Theories with a Heavy Z' Boson with Family Non-Universal Couplings
• 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
• 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
• Rare top decays t -> c gamma, t -> c g and CKM unitarity
• 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
• $t\to cV$ via SUSY FCNC couplings in the unconstrained MSSM
• Collider aspects of flavour physics at high Q
• New Physics effects in the flavor-changing neutral couplings of the Top quark
• Next-to-leading order QCD corrections to the top quark decay via model-independent FCNC couplings
• The "Top Priority" at the LHC
• 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 Quark Physics at the Tevatron
• Testing flavor-changing neutral currents in the rare decays t->cViVj
• Constraints on top quark FCNC from electroweak precision measurements
• t->cg, cγ, cZ in the Left-Right Supersymmetric Model
• Top flavour-changing neutral coupling signals at a linear collider
• 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
• 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
• Rare top quark and Higgs boson decays in Alternative Left-Right Symmetric Models
• Strong flavour changing effective operator contributions to single top quark production
• 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
• Direct top-quark decay width measurement in the $t\bar{t}$ lepton+jets channel at $\sqrt{s}$=8 TeV with the ATLAS experiment
• Next-to-leading order QCD corrections to the top quark decay via the Flavor-Changing Neutral-Current operators with mixing effects
• In search of an unbiased temperature estimator for statistically poor X-ray spectra
• Top quark FCNC decays and productions at LHC in littlest Higgs model with T-parity
• The flavor-changing single-top quark production in the littlest Higgs model with T parity at the LHC
• 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
• SUSY-QCD Effect on Top-Charm Associated Production at Linear Collider
• Top-Quark FCNC Decay t->cgg in Topcolor-assisted Technicolor Model
• Searches for anomalous $tqZ$ couplings from the trilepton signal of $tZ$ associated production at the 14 TeV LHC
• Anomalous $tqZ$ coupling effects in rare B- and K-meson decays
• Search for t->ch at e+e- Linear Colliders
• FCNC Top Quark Decays in Extra Dimensions
• Probing Top-Quark Couplings at Lepton and Photon Colliders
• Anomalous $tq\gamma$ coupling effects in exclusive radiative B-meson decays
• Constraints on anomalous $tcZ$ coupling from $\bar{B}\to {\bar{K}}^{\ast }{\mu }^{+}{\mu }^{-}$ and $B_s\to {\mu }^{+}{\mu }^{-}$ decays
• Model independent top quark width measurement using a combination of resonant and non resonant cross sections
• 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
• Single top Quark Production in e-gamma Collisions and Testing Technicolor Models
• t-c gamma and t-cg in warped extra dimensions
• Decay $t->c\gamma$ in models with SU_L(3)XU_X(1) gauge symmetry
• Anomalous Production of Fourth Family Up Quarks at Future Lepton Hadron Colliders
• Single Top from Technipion Production
• CP Violating Asymmetries in the Flavor Changing Single Top Quark Production
• Flavor signatures of complex anomalous $tcZ$ couplings
• B_s(d) - bar B_s(d) mixing constraints on flavor changing decays of t and b quarks
• Analyzing the anomalous dipole moment type couplings of heavy quarks with FCNC interactions at the CLIC