Top Quark Electroweak Dipole Moment at a High Energy Muon Collider

Abstract

We study the sensitivity reach to probe the electroweak dipole operators associated with a top quark at a multi-TeV lepton collider. Studying the electroweak dipole operators is strongly motivated by precision physics. The operators exhibit unique chiral structure and can be enhanced with respect to others in theories beyond the Standard Model. We illustrate this point in a strongly coupled composite Higgs model. We find that a high energy ${\mu }^{+}{\mu }^{-}$ collider may offer unique opportunity to probe the electroweak dipole operators beyond the coverage by the LHC and future hadron colliders. The significant sensitivity is achieved by the leading channel ${\mu }^{+}{\mu }^{-}\to t\bar{t}$ near the threshold, and substantially improved by the novel channel ${\mu }^{+}{\mu }^{-}\to t\bar{t}h$ at high energies. We may be able to reach a new physics scale well above the collider energy for moderate couplings of the Wilson coefficients. Our main conclusions are applicable to future $e^{+}{e}^{-}$ colliders.

arXiv comment19 pages, 5 figures, 7 tables

References in corpus (29)

• 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
• 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
• Dimension-Six Terms in the Standard Model Lagrangian
• The Minimal Composite Higgs Model
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• The Strongly-Interacting Light Higgs
• WHIZARD: Simulating Multi-Particle Processes at LHC and ILC
• Higgs as a Holographic Pseudo-Goldstone Boson
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm
• A precision measurement of the electron's electric dipole moment using trapped molecular ions
• The SMEFTsim package, theory and tools
• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• Counting 4 pi 's in Strongly Coupled Supersymmetry
• Electric Dipole Moments in the MSSM Reloaded
• High Energy Leptonic Collisions and Electroweak Parton Distribution Functions
• Vector boson fusion at multi-TeV muon colliders
• Probing Electroweak Top Quark Couplings at Hadron Colliders
• Patterns of Strong Coupling for LHC Searches
• Top-quark electroweak couplings at the FCC-ee
• Electromagnetic dipole moments of the top quark
• QCD Corrections to Static Heavy Quark Form Factors
• Improved sensitivity on the electromagnetic dipole moments of the top quark in $\gamma \gamma$, $\gamma {\gamma }^{\ast }$ and ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the CLIC
• LHC tau-pair production constraints on $a_{\tau }$ and $d_{\tau }$
• Probing the CP Structure of the Top Quark Yukawa at the Future Muon Collider
• Probing the anomalous electromagnetic dipole moments of the top quark in $\gamma p$ collision at the LHC, the HL-LHC and the HE-LHC

Cited by in corpus (1)

• Detect anomalous quartic gauge couplings at muon colliders with quantum kernel k-means