Science Case for the new High-Intensity Muon Beams HIMB at PSI

Abstract

In April 2021, scientists active in muon physics met to discuss and work out the physics case for the new High-Intensity Muon Beams (HIMB) project at PSI that could deliver of order $10^{10}$\,s${}^{-1}$ surface muons to experiments. Ideas and concrete proposals were further substantiated over the following months and assembled in the present document. The high intensities will allow for completely new experiments with considerable discovery potential and unique sensitivities. The physics case is outstanding and extremely rich, ranging from fundamental particle physics via chemistry to condensed matter research and applications in energy research and elemental analysis. In all these fields, HIMB will ensure that the facilities S$\mu$S and CHRISP on PSI's High Intensity Proton Accelerator complex HIPA remain world-leading, despite the competition of muon facilities elsewhere.

116 pages, 42 figures

References in corpus (40)

• Secluded U(1) below the weak scale
• The trouble with $H_0$
• The $g-2$ of charged leptons, $\alpha (M_Z^2)$ and the hyperfine splitting of muonium
• Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• The muon $g$-2 and $\Delta \alpha$ connection
• Flavor probes of axion-like particles
• Measurement of the anomalous precession frequency of the muon in the Fermilab Muon g-2 experiment
• Limiting two-Higgs-doublet models
• Research Proposal for an Experiment to Search for the Decay μ -> eee
• The Resistive-WELL detector: a compact spark-protected single amplification-stage MPGD
• $(g-2{)}_{\mu }$, Lepton Flavour Violation and $Z$ Decays with Leptoquarks: Correlations and Future Prospects
• Magnetic Field Measurement and Analysis for the Muon g-2 Experiment at Fermilab
• Revising Limits on Neutrino-Majoron Couplings
• A search for two body muon decay signals
• A light pseudoscalar of 2HDM confronted with muon g-2 and experimental constraints
• On the transition form factors of the axial-vector resonance $f_1(1285)$ and its decay into $e^{+}{e}^{-}$
• Laboratory tests of Lorentz and CPT symmetry with muons
• Lepton-Specific Two-Higgs Doublet Model: Experimental Constraints and Implication on Higgs Phenomenology
• A dispersive estimate of scalar contributions to hadronic light-by-light scattering
• QED at NNLO with McMule
• Beam dynamics corrections to the Run-1 measurement of the muon anomalous magnetic moment at Fermilab
• Short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude: an update
• First-Generation New Physics in Simplified Models: From Low-Energy Parity Violation to the LHC
• CMS Barrel Pixel Detector Overview
• Unveiling Hidden Physics at the LHC
• Muon and electron g-2 and proton and cesium weak charges implications on dark ${\mathbf{Z}}_{\mathbf{d}}$ models
• Precision measurement of the Lamb shift in Muonium
• Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector
• Fully differential NLO predictions for the rare muon decay
• Do topology and ferromagnetism cooperate at the EuS/Bi${}_2$Se${}_3$ interface?
• Search for a muon EDM using the frozen-spin technique
• $(g-2{)}_{\mu }$ in the 2HDM and slightly beyond -- an updated view
• Flavour anomalies and the muon $g-2$ from feebly interacting particles
• Time-reversal symmetry breaking in Re-based superconductors: Recent developments
• Intense beam of metastable Muonium
• MuPix and ATLASPix -- Architectures and Results
• Highlights and Perspectives from the CMS Experiment
• Depth dependence of the ionization energy of shallow hydrogen states in ZnO and CdS
• Charged lepton flavor violation in light of Muon $g-2$

Cited by in corpus (8)

• High-precision muon decay predictions for ALP searches
• Measurements of $\mu \to 3e$ Decay with Polarised Muons as a Probe of New Physics
• Gamma Factory high-intensity muon and positron source: Exploratory studies
• Small sample measurements at the low energy muon facility of Paul Scherrer Institute
• Data Flow in the Mu3e DAQ
• A Review of $\mu \to eee$, $\mu \to e\gamma$ and $\mu N\to eN$ Conversion
• Searching for Charged Lepton Flavour Violation with Mu3e
• Phase space compression of a positive muon beam in two spatial dimensions