Decoupling of Anomalous Top-Quark-Decay Vertices in Angular Distribution of Secondary Particles

Abstract

Angular distribution of a secondary particle from top-quark decays is studied in a simple and general manner, paying careful attention to how relevant the top-quark production mechanism is. The conditions that lead to the distribution free from any possible anomalous top-quark decay interactions are specified. It is discussed how important the approximations adopted in earlier papers are.

9 pages, Latex, Final version (to appear in Phys.Lett. B)

Cited by in corpus (39)

• Effective-Field-Theory Approach to Top-Quark Production and Decay
• Non-resonant New Physics in Top Pair Production at Hadron Colliders
• Single top quark production at LHC with anomalous Wtb couplings
• Probing anomalous Wtb couplings in top pair decays
• W polarisation beyond helicity fractions in top quark decays
• Top quark spin correlations and polarization at the LHC: standard model predictions and effects of anomalous top chromo moments
• Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
• Lepton distribution as a probe of new physics in production and decay of the t quark and its polarization
• Top polarization, forward-backward asymmetry and new physics
• On measurement of top polarization as a probe of $t\bar{t}$ production mechanisms at the LHC
• A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions
• Quantum entanglement and top spin correlations in SMEFT at higher orders
• Chiral Couplings of W' and Top Quark Polarization at the LHC
• Study of CP Property of the Higgs at a Photon Collider using $\gamma \gamma \to t\bar{t}\to lX$
• Top polarisation studies in $H^{-}t$ and $Wt$ production
• Probing anomalous tbW couplings in single-top production using top polarization at the Large Hadron Collider
• Probing chromomagnetic and chromoelectric couplings of the top quark using its polarization in pair production at hadron colliders
• Top Polarization in Stop Production at the LHC
• Model-independent analysis of Higgs spin and CP properties in the process $e^{+}{e}^{-}\to t\bar{t}\Phi$
• Exploring anomalous top interactions via the final lepton in ttbar productions/decays at hadron colliders
• Optimal-observable Analysis of Possible Non-standard Top-quark Couplings in pp -> t t-bar X -> l^+ X'
• Model-independent measurement of the top quark polarisation
• Polarization of top quark as a probe of its chromomagnetic and chromoelectric couplings in $tW$ production at the Large Hadron Collider
• Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
• CP-violating top quark couplings at future linear $e^{+}{e}^{-}$ colliders
• Broad composite resonances and their signals at the LHC
• Secondary particles spectra in the decay of a polarized top quark with anomalous $tWb$ coupling
• Boosted Top quark polarization
• The top quark right coupling in the tbW-vertex
• Jets with electrons from boosted top quarks
• Dilepton azimuthal correlations in $t\bar{t}$ production
• Two-particle kinematic distributions from new physics at an electron-positron collider with polarized beams
• Symbolic expressions for fully differential single top quark production cross section and decay width of polarized top quark in the presence of anomalous Wtb couplings
• An anomalous Wtb coupling at a linear collider
• New Method for Reconstructing Effective Top Quark Spin
• Final charged-lepton angular distribution and possible anomalous top-quark couplings in p p -> t tbar X -> l^+ X'
• Decoupling theorem in top productions/decays revisited -- To what extent can we understand it visually?
• Tagging a Boosted Top quark with a $\tau$ final state
• Angular Distributions as Lifetime Probes