Fundamental Interactions in Low-Energy Systems

I The Electro-Weak Force at Low Energy.- Weak Interactions at Low Energy.- Determination of the Muon Decay Parameters.- Measurement of the ?-Parameter in ?-Decay.- Muon Capture in Hydrogen.- Muon Capture in Deuterium.- Parity Violation in Atoms.- Neutral Currents in Muonic Atoms.- Rare Muon Decays and Lepton-family Number Conservation.- Neutrino Masses and Mixing from Neutrino Oscillations.- Searches for Mixed Heavy Neutrinos in Meson Decays and in Muon Capture.- II Strong Interactions.- The Exotic Atoms of QCD: Glueballs, Hybrids and Baryonia.- Quarkonium Spectroscopy.- The LEAR Physics Programme.- Electron-positron Pair Production in $$p/bar p$$ annihilation at LEAR.- $$p/bar p$$ Annihilations at Rest in Hydrogen Gas: Report on Preliminary Results of the Asterix Experiment at LEAR.- First Physics Results from Experiment PS172 at LEAR.- Antiproton-proton Reactions in the Momentum Range from 250 to 600 MeV/c.- X-rays from Protonium — PS 174 Progress Report.- Antiproton X-ray Spectroscopy in the Cyclotron Trap: Preliminary Results.- PS184: A Study of Antiproton-nucleus Interactions at LEAR.- Perspectives of Antineutron Physics.- III Search for Hypothetical Particles and Interactions.- Weakly Charged Exotic Particles.- Search for Muon-hadron Interactions from Muonic X-rays.- Experimental Search for Strong van der Waals Forces.- Photon-photon Interaction Detection via the Vacuum Birefringence Induced by a Magnetic Field: Status of the Experiment.- IV Perspectives of Superconducting Junctions in Nuclear and Particle Physics.- Potential of Superconducting Tunnel Junctions as Detectors in Nuclear and Particle Physics.- Development of a High Resolution Superconducting Detector for keV Radiation at SIN.- New Detectors and Neutrino Mass.- V Some Aspects of the Physics ofMuonic Atoms and Molecules.- Different Facets of Muonic Molecules.- New Experimental Results on Muon Catalyzed Fusion in Low Density Deuterium-tritium gas.- Progress in Muon Catalyzed Fusion at JINR in Dubna (USSR).- Triplet State Lifetimes and Muon Capture in Gaseous Hydrogen.- Formation of the Lightest Muonic Atoms and the 2S-lifetime of the (??4He)+-ion.