Recent Developments in Particle Symmetries (eBook)

Front Cover 1
Recent Developments in Particle Symmetries 4
Copyright Page 5
Table of Contents 8
FOREWORD 6
OPENING CEREMONY 14
Discorso Inaugurale 15
Parole di Benvenuto 23
Invited Speech 24
PART I: LECTURES 26
CHAPTER 1. HIGHER SYMMETRIES 26
I. Introduction about unitary symmetry 26
II. Useful tools 30
III. SU(6) with applications 37
IV. SU(6,6) and subgroups 45
IV.1 The subgroup SU(6)W of SU(6,6) 55
CHAPTER 2. DEVIATIONS FROM UNITARY SYMMETRY 60
I · Introduction 60
II. Bootstrap theory of octet enhancement 62
III. S matrix perturbation theory 75
IV. Octet enhancement in the B and supermultiplets 94
References 114
CHAPTER 3. BROKEN SYMMETRIES SUM RULES 117
Introduction 117
I· Exact internal symmetry 118
II. Broken symmetries 120
III. The Adier-Weisberger sum rule 132
IV. Saturation of commutation relations and particle multiplets 142
V. A possible algebra of currents 145
CHAPTER 4. DIFFICULTIES OF RELATIVISTIC U(6) 151
I. Non-covariant models 152
II. Covariant models 159
III. Coleman's theorems 168
IV. Unitarity 179
CHAPTER 5. CP VIOLATION 189
I. Introduction 189
II. General Remarks 192
III. Weak interactions 206
References 215
CHAPTER 6. CP VIOLATION AND K DECAY 218
I. K Decays 218
II. Interference of K5 and KL in 2p decay 226
III. CP violation and the .S = .Q rule in K° leptonic decay 
235 
IV. Unitarity and p2 - q2 241
References 247
Figure captions 249
CHAPTER 7. PROTON-ANTIPROTON ANNIHILATIONS AT REST 261
I. Introduction 261
II. The statistical model 262
III. Phenomenological analysis of some final state in pp annihilations at rest 264
IV. Partial rates for the annihilations into two and three mesons 274
V. A direct test of charge conjugation invariance in proton-antiproton annihilation at rest 276
References 281
PART II: CLOSING LECTURE 288
CHAPTER 8. THE SIGNIFICANCE OF INTERNAL SYMMETRIES 288
1. The hierarchy of internal symmetries 288
2. The well-ordered violation of internal symmetries 291
3· The relation of internal and geometrical symmetries: Wigner's theory of nuclear supermultiplets 293
4. The combination of internal and geometrical symmetries in the physics of elementary particles 294
5. An outlook 298
References 299
PART III: SEMINARS 301
CHAPTER 9. LOW-ENERGY HYPERON-PROTON INTERACTIONS 
301 
References 309
CHAPTER 10. STRANGE RESONANCES 311
I. Introduction 311
1· Mesonic resonances 311
2. Mesonic resonances with strangeness +2 314
3. Baryonic resonances 315
References 320
CHAPTER 11. INVITED DISCUSSION FOLLOWING THE FOCARDI LECTURE 331
References 333
CHAPTER 12. CURRENT EXPERIMENTS AT DESY 336
Introduction 336
I. Current experimental programme 336
II. Preliminary experimental results 341
References 362
Figure captions 364
CHAPTER 13. THE ELECTRON SPECTRUM FROM MUON DECAY 373
The spectrometer method 375
The visual method 375
References 379
CHAPTER 14. SUPERCONDUCTORS: SUPERCONDUCTING AND OTHERWISE 383
I. Superconducting 383
II. Otherwise 400
References 411
PART IV: DISCUSSIONS 412
Discussion 1 412
Discussion 2 422
Discussion 3 428
Discussion 4 437
Discussion 5 440
Discussion 6 444
Discussion 7 451
Discussion 8 455
Discussion 9 457
Discussion 10 458
CLOSING CEREMONY 461
"The privilege of being a scientist" 463
LECTURERS 467
LIST OF PARTICIPANTS 468