Physics at LEAR with Low-Energy Cooled Antiprotons (Ettore Majorana International Science Series, 17)

Front Matter....Pages i-vi Opening Address....Pages 1-2 Front Matter....Pages 3-3 The CERN p̄ Complex and Present Status and Future Developments of the Antiproton Accumulator....Pages 5-13 Construction of the Lear Facility: Status Report....Pages 15-25 Phase-Space Cooling Techniques and Their Combination in Lear....Pages 27-48 Ultraslow Extraction (Status Report)....Pages 49-54 The Lear Experimental Areas....Pages 55-68 Some Limitations in Lear....Pages 69-80 Front Matter....Pages 81-81 Protonium and Other Exotic p̄-Atoms....Pages 83-93 The Atomic Cascade in p̄p and Implications for p̄p Annihilations at Rest....Pages 95-108 Protonium Spectroscopy and Identification of P-Wave And S-Wave Initial States of pp̄ Annihilations at Rest with the Asterix Experiment at Lear....Pages 109-141 PS174, Precision Survey of X-Rays from P̄P (P̄D) Atoms Using the Initial Lear Beam — Problems and Their Solutions....Pages 143-154 The Cyclotron Trap: Status of Preparation and Planned Experiments (PS 175)....Pages 155-163 X-Ray Spectroscopy of p̄ Hydrogen in the Cyclotron Trap....Pages 165-169 Effects of the Inelastic Channels and Quark Configurations in pp̄ and K - p Atoms....Pages 171-179 The Nuclear Level Shift of Proton-Antiproton Atom....Pages 181-183 Pressure Dependence of X-Ray Yields in Protonium....Pages 185-189 Special “Sum Rules” for the X-Rays Yield from Protonium....Pages 191-192 Nucleon-Antinucleon Annihilation at Low Energies....Pages 193-200 Meson Resonances and Glueballs: Theoretical Review and Relevance to PP̄ at Lear....Pages 201-218 pp̄ in Quark Model....Pages 219-234 Front Matter....Pages 81-81 A Review of N̄N Annihilation Potentials at Low Energies and the Shifts and Widths of p̄-Nucleus Atomic Bound States....Pages 235-246 The Annihilation of Quasinuclear Baryonium with Nonzero Angular Momenta....Pages 247-251 (qq̄) Spectroscopy and Search for Glueballs, Baryonia and other Boson Resonances in p̄p Annihilations at Rest with the Asterix Experiment at Lear....Pages 253-280 Investigations on Baryonium and Other Rare pp̄ Annihilation Modes Using High-Resolution π° Spectrometers (PS182)....Pages 281-287 Search for Bound N̄N States Using a Precision Gamma and Charged Pion Spectrometer at Lear(PS183)....Pages 289-304 pp̄ Annihilation at Rest in the One Meson Exchange Model: Application to the Asterix Experiment....Pages 305-322 Role of Isospin in pp̄ Annihilation....Pages 323-328 Electromagnetic form Factors of the Proton in the Time Like Region....Pages 329-338 Vector Meson Spectroscopy in PP̄ → e + e - X....Pages 339-345 Precision Measurements of the Electromagnetic form Factors of the Proton in the Time-Like Region and Detailed Vector Meson Spectroscopy....Pages 347-352 The PS 170 Central Detector....Pages 353-364 A Five Pole Fit to the Proton and Neutron Electromagnetic form Factors and its Implications for the Reaction n̄n→e + e - ....Pages 365-374 A New Measurement of pp̄ Excitation Functions....Pages 375-387 Search for Structure in the PP̄ Annihilation Cross-Section in the S Region....Pages 389-393 NN̄ Forces and Annihilation in the Potential Approach....Pages 395-408 Applications of Dispersion Relations to Protonantiproton Scattering....Pages 409-419 NN̄ Interaction in a Three Dimensional Relativistic Equation....Pages 421-426 Status Report on Experiment PS172: p̄p Total Cross: Section and Spin Effects in p̄p + K + K - , π + π - and p̄p....Pages 427-436 Measurement of pp̄ Cross-Sections at Low p̄ Momenta....Pages 437-442 Spin-Dependence in NN̄ at Low Energy....Pages 443-445 Front Matter....Pages 81-81 Spin-Effects in P-P̄ Scattering....Pages 447-453 A Polarized Antiproton Beam at LEAR....Pages 455-464 Study of Antineutron Production at LEAR....Pages 465-467 Calculations of p̄p → ȲY Near Threshold....Pages 469-475 A Study of the p̄p → ȲY Reaction at Threshold Using Lear....Pages 477-488 Hyperon- and Antihyperon-Nucleon Scattering at LEAR....Pages 489-493 Antiproton — Nucleus Interactions....Pages 495-505 Quark-Gluon Plasma in p̄- Annihilation on Nuclei....Pages 507-511 On Possible Existence of Close-to-Threshold Level in the p̄d System....Pages 513-516 Antiproton Interaction with Light Nuclei....Pages 517-531 What Can an Antiproton and a Nucleus Learn from Each Other?....Pages 533-542 The Annihilation of Low-Energy Antiprotons in Nuclei....Pages 543-560 Vacuum Polarization Corrections and Fine Structure in Antiprotonic Atoms....Pages 561-566 Physics with Antiprotonic Atoms....Pages 567-588 A Search for Heavy Hypernuclei at LEAR (PS 177)....Pages 589-595 Front Matter....Pages 597-597 Theory of Electron Cooling in a Magnetic Field....Pages 599-604 The Electron Cooling Device for LEAR....Pages 605-618 High-Energy Electron Cooling at Lear pp̄-Collider....Pages 619-628 Measurements of Angular Distributions of Degraded Protons in Thick Absorbers....Pages 629-631 A Small Deceleration Ring for Extra Low Energy Antiprotons (ELENA)....Pages 633-642 Front Matter....Pages 597-597 The Medicyc Cyclotron as a Temporary Decelerator for LEAR....Pages 643-648 Co-Rotating Beams of Antiprotons and H - in LEAR and High Resolution Spectroscopy of pp̄ Atoms in Flight....Pages 649-657 Production of and Experimentation with Antihydrogen at LEAR....Pages 659-676 Internal Targets for LEAR....Pages 677-690 A Clustered H 2 Beam....Pages 691-700 Internal Hydrogen or Solid Targets and Polarization Experiments at LEAR....Pages 701-708 Comment on the Feasibility of Antiproton Polarization in LEAR by Means of the Transverse Stern-Gerlach Effect....Pages 709-710 The Decays of Heavy Quarkonium as a Test of QCD....Pages 711-724 Experimental Possibility of Charmonium and Bottonium Spectroscopy....Pages 725-728 LEAR, Double-LEAR, Super-LEAR as Colliders....Pages 729-735 Front Matter....Pages 737-737 Test of the Non Separability of the K°K̄° System....Pages 739-745 Strong and Weak CP Violation at LEAR....Pages 747-759 High Precision P-P̄ Mass Comparison....Pages 761-769 A Penning Trap to Store Antiprotons....Pages 771-778 A Possibility to Determine the p̄H - Mass Difference with Stored and Cooled P̄ and H - Beams in LEAR....Pages 779-780 On the Measurement of the Antineutron Mass....Pages 781-786 Antiprotonic Atoms and Long Range Hadronic Interactions....Pages 787-793 Angular Correlation between Annihilation Products and K α X Ray in pp̄ Annihilation at Rest....Pages 795-797 High Resolution Study of p̄ — Atoms with a Focussing Crystal Spectrometer at LEAR....Pages 799-802 pp̄ → γγ at LEAR....Pages 803-806 Front Matter....Pages 737-737 P̄P Annihilation in Flight at LEAR....Pages 807-813 Further Possibilities for Measurements on the p̄p-System Using the Cyclotron Trap....Pages 815-818 The Extraction of Low Energetic Antiprotons Out of a Cyclotron Trap....Pages 819-821 Measurement of the p̄ Annihilation Cross-Section at Very Low Energy....Pages 823-828 The Internal Pair Production as a Sensitive Tool for the Detection of Baryonium States....Pages 829-832 Search for Baryonium by High Resolution Measurement of p̄p Elastic Differential Cross Section and Analysing Power from 250 MeV/c to 700 MeV/c....Pages 833-841 Threshold Studies at LEAR....Pages 843-849 Could Antiprotons be Used to Get a Hot, Dense Plasma?....Pages 851-853 Antiproton Annihilation in Nuclear Matter: Multipion-Nucleus Interactions and Exotic Phenomena....Pages 855-860 On Some Specific Features of the p̄ Interaction with 9 Be....Pages 861-863 The Use of Antiproton Beams to Study Collision Phenomena in Gases and Solids, Together with Channeling Effects....Pages 865-875 Antideuterons at LEAR....Pages 877-880 Concluding Remarks....Pages 881-888 Back Matter....Pages 889-898 The Workshop on Physics at LEAR with Low Energy Cooled Anti protons was held in Erice, May 9 - 16, 1982, at the Ettore Majorana Centre for Scientific Culture, in the framework of the International School of Physics of Exotic Atoms. The Workshop was organized by a committee composed of R. Armenteros, D. Bugg, P. Dalpiaz, U. Gastaldi, K. Kilian, R. Klapisch, P. Lefevre, D. M6hl, S. Polikanov, B. Povh and J.M. Richard. It was attended by 101 physicists from 44 insti tutions and 14 countries, representing one third of the LEAR users. Thjs Workshop was the first general meeting of the LEAR commu nity after the approval of the CERN Low Energy Antiproton Ring faci lity and of the experiments scheduled there for the initial period of oper & tion. It was organized for three main purposes: (i) to review the field of low energy antiproton physics, the initial LEAR experimental programme and the status of preparation of the approved experiments; (ii) to review the facility and the progress in its construction, and to discuss the conditions of its operation; (iii) to discuss future developments of the facility and of the experi mental programme. These Proceedings contain the papers presented in Erice both orally and in the poster session, which displayed also contributions from colleagues who unfortunately could not attend the Workshop. The reports have been ordered in four sessions, following the pro gramme of the meeting. The CERN low energy antiproton facility is presented in Section I