1Intense Slow Muon Physics

Physics programs with slow muons at a neutrino factory are described. Emphasis is given to the muon trio, the muon g − 2 anomalous magnetic moment, the muon electric dipole moment (EDM) and charged lepton mixing (CLM). In particular, a future muon source with high-intensity and high-luminosity, PRISM, developed at Osaka University is described. 1. Muon Trio An overview (but not comprehensive) list of in-tense slow muon physics programs at a future neutrino factory, ranging from particle physics, nuclear physics to applications, is given in Ta-ble 1, where programs are categorized into three groups, (1) precision measurements, (2) search for rare processes, and (3) application. Among the particle physics programs with muons [1], very important are (a) precision mea-surement of the muon g − 2 anomalous mag-netic moment, (b) search for T-odd muon electric dipole moment (EDM), and (c) search for charged lepton mixing (CLM)1. I call them ”the muon trio”. They are significantly impor-tant to search for new physics, and also closely related one another in some cases of new physics, such as supersymmetry (SUSY). From this rea-son, I would focus on ”the muon trio ” hereafter. The goals of next generation experiments on the muon trio might be given as follows. Muon g − 2 0.5 ppm → 0.05 ppm Muon EDM 10¡19e·cm → 10¡24e · c