Search Results (3 total)

The status of the research on muon colliders is discussed and plans are outlined for future theoretical and experimental studies. Besides work on the parameters of a 3–4 and 0.5 TeV center-of-mass (COM) energy collider, many studies are now concentrating on a machine near 0.1 TeV (COM) that could be a factory for the s-channel production of Higgs particles. We discuss the research on the various components in such muon colliders, starting from the proton accelerator needed to generate pions from a heavy-Z target and proceeding through the phase rotation and decay (π→μν_μ) channel, muon cooling, acceleration, storage in a collider ring, and the collider detector. We also present theoretical and experimental R&D plans for the next several years that should lead to a better understanding of the design and feasibility issues for all of the components. This report is an update of the progress on the research and development since the feasibility study of muon colliders presented at the Snowmass '96 Workshop [R. B. Palmer, A. Sessler, and A. Tollestrup, Proceedings of the 1996 DPF/DPB Summer Study on High-Energy Physics (Stanford Linear Accelerator Center, Menlo Park, CA, 1997)].

The sample of 51 high-information Σp events has a mean rotation of 32° per event and gives no evidence of bias; it yields μ_Σ⁺=+3.0±1.2μ_N and αP̅ =+0.85±0.25 in the direction P-^ _γ×P-^ _Σ. All magnetic field components along the path of each Σ⁺ have been considered. The use of nuclear emulsion enables one to include the effects of the Σp c.m. angle on detection efficiency, and thereby on the calculated value of μ_Σ⁺.