$\mu$TRISTAN

Abstract

The ultra-cold muon technology developed for the muon $g-2$ experiment at J-PARC provides a low emittance ${\mu }^{+}$ beam which can be accelerated and used for realistic collider experiments. We consider the possibility of new collider experiments by accelerating the ${\mu }^{+}$ beam up to 1 TeV. Allowing the ${\mu }^{+}$ beam to collide with a high intensity $e^{-}$ beam at the TRISTAN energy, $E_{e^{-}}=30$ GeV, in the storage ring with the same size as TRISTAN (the circumference of 3 km), one can realize a collider experiment with the center-of-mass energy $\sqrt{s}=346$ GeV, which allows productions of the Higgs bosons through the vector boson fusion processes. We estimate the deliverable luminosity with existing accelerator technologies to be at the level of $5\times 10^{33}$ cm${}^{-2}$ s${}^{-1}$, with which the collider can be a good Higgs boson factory. The ${\mu }^{+}{\mu }^{+}$ colliders up to $\sqrt{s}=2$ TeV are also possible by using the same storage ring. They have a capability of producing the superpartner of the muon up to TeV masses.

arXiv comment23 pages, 7 figures, version to appear in PTEP

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• Eigenvector Continuation and Projection-Based Emulators
• Lepton flavor physics at ${\mu }^{+}{\mu }^{+}$ colliders
• Lepton-Flavor-Violating ALP Signals with TeV-Scale Muon Beams
• Neutrino mass models at $\mu$TRISTAN
• Aiming for Tops of ALPs with a Muon Collider
• Testing tree level TeV scale seesaw scenarios in $\mu$TRISTAN
• Floating block method for quantum Monte Carlo simulations
• Conceptual Design of the Muonium-to-Antimuonium Conversion Experiment (MACE)
• Acceleration of positive muons by a radio-frequency cavity
• Higgs boson production at ${\mu }^{+}{\mu }^{+}$ colliders
• Barr-Zee Diagrams at a High-Energy Muon Collider
• Non-Hermitian Quantum Mechanics Approach for Extracting and Emulating Continuum Physics Based on Bound-State-Like Calculations
• Seesaw Models under the Lens of Angular Distributions at ${\mu }^{+}{\mu }^{-},{\mu }^{+}{\mu }^{+},{\mu }^{+}\gamma$ and ${\mu }^{+}{e}^{-}$ Colliders
• Doubly charged Higgs boson at same-sign lepton colliders
• Neutrino-Portal Dark Matter Detection Prospects at a Future Muon Collider
• Z and Higgs boson decays with doubly-charged scalars at one-loop: current constraints, future sensitivities, and application to lepton-triality models
• Analytic formulae for T violation in neutrino oscillations
• Probing $\Delta L=2$ lepton number violating SMEFT operators at the same-sign muon collider
• Lepton flavor violating top quark FCNC processes at the $\mu$TRISTAN