Utilizing only the vertical muon intensity of the Gaisser parameterization of the muon flux at the surface and propagating this energy spectrum underground according to statistical ionization and radiative energy losses, it is possible to calculate the underground muon intensity Crouch curve. In addition, the primary spectral index of the Gaisser parameterization can be adjusted from E to E sim...

The eventual prospect of muon colliders reaching several TeV encourages us to consider the experimental opportunities presented by very copious stores of muons, approaching 10 per year. I summarize and comment upon some highlights of the Fermilab Workshop on Physics at the First Muon Collider and at the Front End of a Muon Collider. Topics include various varieties of μμ colliders, μp colliders...

Conceptual design studies are underway for muon colliders and other high-current muon storage rings that have the potential to become the first true “neutrino factories”. Muon decays in long straight sections of the storage rings would produce precisely characterized beams of electron and muon type neutrinos of unprecedented intensity. This article reviews prospects the for these facilities to ...

The prospects for a muon collider operated as a Higgs factory are reviewed. The large muon mass means that the s-channel Higgs production mechanism is available, and simultaneously suppresses bremsstrahlung so that the beam energy spread can be kept to the MeV level required to exploit this. Thus this is the only machine which can make a direct scan over the Higgs resonance, and make an extraor...

Searches for new physics using muons are reviewed. Particular attention is paid to muon number non-conserving processes, like the decay μ → eγ and muon–electron conversion in muonic atoms. Also, experimental determinations and theoretical predictions for the muon anomalous magnetic moment are reviewed. Muons were first observed in cosmic ray detectors in 1936 [1, 2]. However, for several follow...

Muon cooling is the main technological obstacle in the building of a muon collider. A muon cooling scheme based on Frictional Cooling holds promise in overcoming this obstacle. An experiment designed to demonstrate the Frictional Cooling concept using protons was undertaken. Although the results were inconclusive in the observation of cooling, the data allowed for the qualification of detailed ...

It is shown that at muon colliders with the energy in the region of 100 TeV the process of coherent pair creation by the muon in the field of the opposing beam becomes important and imposes some limitations on collider parameters. One of the main advantages of muon colliders is that the muon is much heavier than the electron and therefore the radiation (beamstrahlung) in beam collisions is supp...

A muon collider [1] may be the optimal way to study high-energy lepton-antilepton collisions, and a neutrino factory [2] based on a muon storage ring may be the ideal tool for the study of neutrino oscillation and the search for leptonic CP violation. Ionization cooling [3, 4], while not yet experimentally demonstrated, is essential for highluminosity muon colliders and has been shown by simula...

We investigate the muon anomalous magnetic dipole moment (MDM), the muon electric dipole moment (EDM) and the lepton-flavour-violating decays of the τ−lepton, τ → μγ and τ → 3μ, in the CP-violating Minimal Supersymmetric Standard Model (MSSM) with nonuniversal softsupersymmetry breaking. We evaluate numerically the muon EDM and the branching ratios B(τ → μγ) and B(τ → 3μ), after taking into acc...