Indirect Probe of Electroweak-Interacting Particles at Future Lepton Colliders

Abstract

Various types of electroweak-interacting particles, which have non-trivial charges under the $\mathrm{SU}(2{)}_L\times \mathrm{U}(1{)}_Y$ gauge symmetry, appear in various extensions of the Standard Model. These particles are good targets of future lepton colliders, such as the International Linear Collider (ILC), the Compact LInear Collider (CLIC) and the Future Circular Collider of electrons and positrons (FCC-ee). An advantage of the experiments is that, even if their beam energies are below the threshold of the production of the new particles, quantum effects of the particles can be detected through high precision measurements. We estimate the capability of future lepton colliders to probe electroweak-interacting particles through the quantum effects, with particular focus on the wino, the Higgsino and the so-called minimal dark matters, and found that a particle whose mass is greater than the beam energy by 100-1000 GeV is detectable by measuring di-fermion production cross sections with $O(0.1)$\% accuracy. In addition, with the use of the same analysis, we also discuss the sensitivity of the future colliders to model independent higher dimensional operators, and found that the cutoff scales corresponding to the operators can be probed up to a few ten TeV.

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• Collider Probes of Real Triplet Scalar Dark Matter
• Probing dark matter particles at CEPC
• Probing Bino-Wino Coannihilation at the LHC
• Exploring Fermionic Dark Matter via Higgs Boson Precision Measurements at the Circular Electron Positron Collider
• Perturbativity Limits for Scalar Minimal Dark Matter with Yukawa Interactions: Septuplet
• Non-thermal Production of Minimal Dark Matter via Right-handed Neutrino Decay
• Muon $g-2$ in Gauge Mediation without SUSY CP Problem
• Cornering Compressed Gluino at the LHC
• Indirect Probe of Electroweakly Interacting Particles at the High-Luminosity Large Hadron Collider
• Electroweak Multiplet Dark Matter at Future Lepton Colliders
• Precise Estimate of Charged Wino Decay Rate
• Indirect Studies of Electroweakly Interacting Particles at 100 TeV Hadron Colliders
• Non-perturbative Effects on Electroweakly Interacting Massive Particles at Hadron Collider
• Establishing the Isolated Standard Model
• Inert sextuplet scalar dark matter at the LHC and future colliders
• Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models
• Closing the window on WIMP Dark Matter