Common Problems in Low- and Medium-Energy Nuclear Physics

The 1978 Advanced Study Institute in Nuclear Theory devoted to common problems in Low and Intermediate Energy Nuclear Physics was held at the Banff Centre in Alberta, Canada from August 21 through September 1, 1978. The present volume contains the text of 25 lectures and seminars given at the Institute and illustrates the directions that nuclear physicists are taking in the evolution toward a unified picture of low, medium and high energy phenomena. Recent attempts at unifying the weak and electromagnetic inter action in particle physics have led naturally to question their role in nuclei. The success of the quark model at interpreting the new resonances in high energy physics makes it imperative to consider their role in dealing with nuclear physics problems at the microscopic level. Is our present knowledge of the nuclear potential consistent' with recent experimental evidence at low and medium energy and can it correlate meaningfully nuclear and pion physics phenomena? These are some of the fundamental questions debated in this book attempting to offer a consistent picture of the nuclear system as it emerges using the electromagnetic, weak and strong interaction probe. The lectures and seminars forming the present volume have been divided into four sections dealing with a) the weak interaction, b) quarks and nuclear structure, c) physics of electrons, protons and kaons, and finally d) pion physics.

Contenu
I: The Weak Interaction.- Weak Neutral Currents in Nuclear Processes.- Novel Topics in ? Nuclear Physics.- The Mysterious Muon.- Axial Currents and Pionic Modes in Nuclei.- Microscopic Calculations of the Quenching of gA and of the Gamow-Teller Matrix Elements in A = 15, 17, 39 and 41 Systems.- Correlations and Total Muon Capture Rates.- Observation of Two-Photon Emission in Nuclear Pion-Capture: Pion-Pion Annihilation in Nuclei.- II: Quarks and Nuclear Structure.- A Quasi-nuclear Coloured Quark Model for Hadrons.- Pion Fields and Quarks in Nuclear Matter.- Baryon-Antibaryon Systems.- III: Physics of Electrons, Protons and Kaons.- Theoretical Investigations of the Optical Model for Nucleons at Negative, Low and Intermediate Energies.- Nuclear Studies Involving Intermediate Energy Projectiles.- Examples Where we Actually Learn Something About Nuclear Structure from Medium Energy Experiments.- The New Giant Resonances An Experimental Review.- Microscopic Theories of Giant Resonances.- Giant Monopole Resonances in Nuclei and Compressibility of Nuclear Matter.- Strangeness-Exchange and Strange Nuclei.- Current Topics in Quasi-Elastic Scattering.- IV: Pion Physics.- Pion Absorption by Nuclei.- Beyond Lowest-Order Results in Pion-Nucleus Reactions.- The Pion-Nucleus Optical Potential.- Recent Developments in the Description of the NN? System.- The ?D?NN? Reaction and the Three-Body Kinematics Game.- Threshold Pion Photoproduction and the Nuclear Structure.- Pion Double Charge Exchange.