Probing heavy charged fermions at $e^{+}{e}^{-}$ collider using the Optimal Observable Technique

Abstract

In this work we study the production of color-neutral and singly-charged heavy leptons at the proposed International Linear Collider. We use the optimal observable technique to determine the statistical accuracy to which the coupling of such fermions to the $Z$ gauge boson (vector, axial or chiral) can be measured. We also consider a UV-complete model that contains these particles as well as a dark matter candidate, and consider some observable effects involving both; the correspondence to chargino production in supersymmetric models with heavy sleptons is briefly discussed.

arXiv commentDerivation of covariance matrix added, dark matter allowed parameter space added, error on significance estimated; Version accepted in JHEP

References in corpus (48)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Evidence for an excess of B -> D(*) Tau Nu decays
• Measurement of an Excess of B -> D(*) Tau Nu Decays and Implications for Charged Higgs Bosons
• Complete Tenth-Order QED Contribution to the Muon g-2
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.7 ppm
• Test of lepton universality in beauty-quark decays
• Test of Lepton Flavor Universality by the measurement of the $B^0\to D^{\ast -}{\tau }^{+}{\nu }_{\tau }$ branching fraction using three-prong $\tau$ decays
• Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
• Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\psi {\tau }^{+}{\nu }_{\tau })$/$\mathcal{B}(B_c^{+}\to J/\psi {\mu }^{+}{\nu }_{\mu })$
• Searches for long-lived charged particles in pp collisions at sqrt(s) = 7 and 8 TeV
• Searches for electroweak production of supersymmetric particles with compressed mass spectra in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Search for Heavy Neutral and Charged Leptons in e+ e- Annihilation at LEP
• Determining the top-antitop and $ZZ$ Couplings of a Neutral Higgs Boson of Arbitrary CP Nature at the NLC
• Search for supersymmetry in final states with two oppositely charged same-flavor leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders
• Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders
• Measuring the Higgs-Vector boson Couplings at Linear $e^{+}{e}^{-}$ Collider
• Optimal-observable analysis of possible new physics in $B\to D^{(\ast )}\tau {\nu }_{\tau }$
• Multipartite Dark Matter with Scalars, Fermions and signatures at LHC
• Search for evidence of the type-III seesaw mechanism in multilepton final states in proton-proton collisions at sqrt(s) = 13 TeV
• Minimal Vector-like leptonic Dark Matter and Signatures at the LHC
• Optimal-Observable Analysis of the Angular and Energy Distributions for Top-Quark Decay Products at Polarized Linear Colliders
• Bounds on the triplet fermions in type-III seesaw and implications for collider searches
• Determining the relative size of the CP-even and CP-odd Higgs Boson Couplings to a Fermion at the LHC
• Four-Fermi Effective Operators in Top-Quark Production and Decay
• Studying possible CP-violating Higgs couplings through top-quark pair productions at muon colliders
• Testing triplet fermions at the electron-positron and electron-proton colliders using fat jet signatures
• Probing Top-Quark Couplings at Polarized NLC
• Optimal-observable Analysis of Possible Non-standard Top-quark Couplings in pp -> t t-bar X -> l^+ X'
• CP-Violating Lepton-Energy Correlation in e\bar{e}\to t\bar{t}
• A Covariant Method for Calculating Helicity Amplitudes
• Search for new physics via single top production at TeV energy $e\gamma$ colliders
• Testing Top-Quark Yukawa Interactions in e+ e- -> t \bar{t} Z
• Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
• Optimal Beam Polarizations for New-Physics Search through gamma gamma -> t tbar -> lX/bX
• New physics with the lepton flavor violating decay $\tau \to 3\mu$
• Optimal observable analysis for the decay $b\to s$ plus missing energy
• Final charged-lepton angular distribution and possible anomalous top-quark couplings in p p -> t tbar X -> l^+ X'

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• Anatomy of singlet-doublet dark matter relic: annihilation, co-annihilation, co-scattering, and freeze-in
• Probing heavy triplet leptons of the type-III seesaw mechanism at future muon colliders
• Optimal sensitivity of anomalous charged triple gauge couplings through $W$ boson helicity at the $e^{+}{e}^{-}$ colliders
• Indian Contributions to LHC Theory
• Optimal estimation of Higgs-Gauge Boson couplings at the future $e^{+}{e}^{-}$ colliders
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