Many Body Structure of Strongly Interacting Systems (eBook)

Refereed and Selected Contributions from the Symposium "20 Years of Physics at the Mainz Microtron MAMI"

Hartmuth Arenhövel, Hartmut Backe, Dieter Drechsel, Jörg Friedrich, Karl-Heinz Kaiser, Thomas Walcher (Herausgeber)

eBook Download: PDF

2007
VIII, 219 Seiten
Springer Berlin (Verlag)
978-3-540-36754-3 (ISBN)

Infos

This carefully edited proceedings volume provides an extensive review and analysis of the work carried out over the past 20 years at the Mainz Microtron (MAMI). This research is centered on the application of Quantum Chromodynamics in the strictly nonperturbative regime at hadronic scales of about 1 fm. The book goes further to offer an outlook on the next wave research, with the forthcoming upgrade of MAMI.

Inhalt

Sponsors 4
Contents 5
Foreword 7
The beauty of the electromagnetic probe 9
1 Introduction 9
2 Evidence for multiple photon effects in elastic electron scattering from the proton 10
3 Role of sea quarks in nucleon structure 10
4 BLAST Experiment at MIT-Bates 11
5 Conclusion 12
References 13
Physics at the Thomas Jefferson National Accelerator Facility 14
1 Personal Comments 14
2 Research at Jefferson Laboratory 14
3 How are the nucleons made from quarks and glue? 15
4 Explore the limits of our understanding of nuclear structure 21
5 Summary 23
References 23
Few-nucleon systems at MAMI and beyond 25
1 Introduction 25
2 Short overview of the (e, eN) reaction 25
3 Studies of the deuteron 26
4 3He and 4He studies 29
5 Polarization transfer experiments 32
6 Summary and conclusion 33
References 33
Experiments with polarized 3He at MAMI 34
1 Introduction 34
2 Polarization methods 35
3 Experiments with polarized 35
4 Summary and outlook 42
References 43
Few-nucleon systems (theory) 44
1 Introduction 44
2 The two-nucleon system 44
3 More complex few-nucleon systems 51
4 Summary and outlook 52
References 53
Nucleon form factors in dispersion theory 54
1 Introduction 54
2 Definitions 55
3 Dispersion relations and spectral decomposition 55
4 Two-pion continuum 56
5 Spectral functions 57
6 Constraints 58
7 Fit results 58
8 Time-like data 59
9 Pion cloud of the nucleon 60
10 Summary & outlook
References 62
Chiral perturbation theory 63
Success and challenge 63
1 Introduction 63
2 Chiral perturbation theory for mesons 64
3 Chiral perturbation theory for baryons 67
4 Summary 73
References 73
Two-photon physics 75
1 Introduction 75
2 Sum rules in Compton scattering 75
3 Nucleon excitation spectrum 77
4 Conclusions 83
References 83
Electromagnetic form factors of the nucleon 85
Experiments at MAMI 85
1 Introduction 85
2 Coincidence experiments to measure GM,n 86
3 Double-polarisation observables 87
4 Double-polarisation experiments 88
5 Interpretation 92
6 Conclusions 93
References 93
Photo- and electro-excitation of the .-resonance at MAMI 95
1 Introduction 95
2 Kinematics and cross section of pion photo-and electro- production 96
3 Experimental methods and results 97
4 Interpretation 103
5 Summary and outlook 104
References 104
Parity violation in electron scattering 105
1 Introduction 105
2 Physics program 105
3 Summary 110
References 110
Parity-violating electron scattering at the MAMI facility in Mainz 111
The strangeness contribution to the form factors of the nucleon 111
1 Introduction 111
2 Strangeness in the nucleon 111
3 Strangeness contribution to the form factors of the nucleon 112
4 The A4 experimental setup and analysis 113
5 Conclusion 116
6 Perspectives 117
References 118
Virtual Compton Scattering at MAMI 120
1 Virtual Compton Scattering and polarizabilities 120
2 The unpolarized experiments at threshold 122
3 Single polarized experiments above pion threshold 128
4 Double polarized experiments at threshold 128
5 Conclusion 130
References 130
Experimental tests of Chiral Perturbation Theory 131
1 Introduction 131
2 Neutral pion photo production 131
3 Electroproduction 133
4 Coherent production from the deuteron 136
5 Summary and outlook 139
References 139
The Bonn Electron Stretcher Accelerator ELSA: Past and future 140
1 The beginning 140
2 The 500MeV synchrotron 140
3 The 2.5GeV synchrotron 141
4 The 3.5GeV ELSA stretcher ring 144
5 Polarised electrons 146
6 Future plans 148
The Mainz Microtron MAMI —Past and future 150
1 Introduction 150
2 The racetrack microtron (RTM) 151
3 From MAMIA to MAMIB 152
4 The Harmonic Double-Sided Microtron ( HDSM) as the fourth stage of MAMI 155
References 160
The Gerasimov-Drell-Hearn sum rule at MAMI 162
1 Introduction 162
2 Experimental setup 163
3 Results 165
References 172
Experiments with photons at MAMI 173
1 Introduction 173
2 Low-energy Compton scattering 173
3 Pion polarizability 174
4 Pion photoproduction in the threshold region 176
5 The .N . .(1232) transition and the E2/M1 ratio 178
6 Future plans 180
References 183
Coherent X-rays at MAMI 184
1 Introduction 184
2 X-Ray interferometry 185
3 Parametric X-radiation 189
4 Conclusion and outlook 192
References 192
X-ray phase contrast imaging at MAMI 195
1 Introduction 195
2 Absorption versus phase shift 196
3 Refraction contrast radiography 196
4 Toward hard X-ray in-line holography 200
References 205
Twenty years of physics at MAMI —What did it mean? 207
1 Introduction 207
2 MAMI microtron development 208
3 Experimental equipment at MAMI 209
4 Selected experiments 210
5 Experiment —Theory interplay at MAMI 215
6 MAMI funding and operation 216
7 The legacy of 20 year of MAMI physics 217
8 Summary 217
References 217
Author index 218

Produkt-Details

• Erscheint lt. Verlag: 3.12.2007
• Zusatzinfo: VIII, 219 p.
• Verlagsort: Berlin
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik
• Themenwelt: Technik
• Schlagworte: Electroweak Probes • Hadron • Hadronic Structure • many-body systems • Microtron
• ISBN-10: 3-540-36754-3 / 3540367543
• ISBN-13: 978-3-540-36754-3 / 9783540367543