The Second Workshop on Grand Unification : University of Michigan, Ann Arbor April 24–26, 1981

Recently there has been rapid progress towards understanding the separate theories of the strong, weak and electromagnetic inter­ actions within the framework of the standard SU(3) x SU(2) x U(l) model. The purpose of the Second Workshop on Grand Unification was to discuss the physics beyond the standard model and the major topic was grand unified theories which unify the strong, weak and electromagnetic sectors. Grand unified theories are presently being used to calculate experimentally accessible quantities such as the proton lifetime and nucleon decay branching ratios. Meanwhile, experiments are currently being performed, and new, dedicated experiments mounted, to measure these quantities. Reports on these experimental and theoretical activities occupied much of the workshop. Furthermore, since grand unified theories allow one to extrapolate the behavior of the universe back to the first instants after the big bang, their cosmological implications and the constraints on these theories from cosmology were of great interest at the workshop. The conference opened with a keynote address by S. L. Glashow in which he discussed among other topics baryon minus lepton number conservation, neutrino masses and a neutrino-free universe. To maximize the interplay between theorists and experimentalists, theoretical and experimental talks were interleaved. An experimental highlight of the workshop was the presentation by S. Miyake of three candidate events for proton decay. Front Matter....Pages i-ix A Neutrino-Free Universe....Pages 1-10 The Kolar Gold Field Nucleon Decay Experiment a Status Report....Pages 11-21 Search for Nucleon Decay: The Deep Underground Water Cerenkov Detector and the Homestake Tracking Spectrometer....Pages 22-40 Experiments at the Soudan Mine: Operating and Proposed....Pages 41-54 The Mont Blanc Fine Grain Experiment on Nucleon Stability....Pages 55-69 A Fine Grain Detector in the Frejus Tunnel....Pages 70-79 Status Report on Harvard, Purdue, Wisconsin Proton Decay Experiment....Pages 80-83 Irvine-Michigan-Brookhaven (I.M.B.) Nucleon Decay Search Status Report....Pages 84-97 Review of Neutron-Antineutron Oscillation Experiments....Pages 98-119 Limitations on Proton Decay Modes from a Passive Detection Scheme....Pages 120-124 Ultimate Limits to Proton Decay Searches....Pages 125-130 Theoretical Expectations for Proton Decay....Pages 131-150 SU (5) Theory vs. Experiment....Pages 151-162 Effective Lagrangian and Effective Parameters in Grand Unified Theories....Pages 163-178 Thresholds in Particle Physics....Pages 179-184 The TeV Picture....Pages 185-194 Complexions of Baryon and Lepton Number Violations Within Maximal Symmetries....Pages 195-221 Grand Unification and the Fundamental Problems of Classical Cosmology....Pages 222-247 Constraints on Guts from Cosmological Baryon Asymmetry....Pages 248-257 Fixed Points: Fermion Mass Predictions....Pages 258-264 Fermion Masses: Another Look....Pages 265-271 Petite Unification: An alternative Viewpoint....Pages 272-281 Supersymmetric Technicolor....Pages 282-284 Supersymmetric Guts....Pages 285-296 Conference Summary....Pages 297-316 Back Matter....Pages 317-321