First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS:
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| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108179-1-4 Inhaltsverzeichnis |
| Physical Description: | IX, 225 S. graph. Darst. |
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| 100 | 1 | |a Neubert, Sebastian |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS |c Sebastian Neubert |
| 264 | 1 | |c 2012 | |
| 300 | |a IX, 225 S. |b graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |a München, Techn. Univ., Diss., 2012 | ||
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| 650 | 0 | 7 | |a COMPASS-Detektor |0 (DE-588)4723679-6 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Teilchenerzeugung |0 (DE-588)4260998-7 |2 gnd |9 rswk-swf |
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| 912 | |a ebook | ||
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Record in the Search Index
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| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION: LIGHT-MESON SPECTROSCOPY 3
1.1 MODELS OF MESONS 4
1.1.1 CONSTITUENT QUARK MODEL 4
1.1.2 QUANTUM CHROMODYNAMICS 7
1.1.3 SPONTANEOUS CHIRAL SYMMETRY BREAKING 8
1.1.4 THE QCD STRING - OLD AND MODERN PICTURES 9
1.1.5 DYNAMICALLY GENERATED MESONS 12
1.1.6 LATTICE-QCD RESULTS ON THE LIGHT-MESON SPECTRUM 13
1.2 PHYSICS POTENTIAL OF THE 5 N CHANNEL 13
1.3 RESONANCES 16
1.3.1 MIXING OF RESONANCES IN THE PROPAGATOR MATRIX FORMALISM 18
2 DIFFRACTIVE PION DISSOCIATION AT COMPASS 25
2.1 THE COMPASS EXPERIMENT 25
2.1.1 HADRON BEAM AT THE M2 SPS BEAMLINE 26
2.1.2 TARGET AND LUMINOSITY 26
2.1.3 SPECTROMETER SETUP 26
2.2 EXCLUSIVE PRODUCTION OF 5 PIONS 30
2.2.1 DATA SET A N D JZ~JZ + JZ~N + 7I~ EVENT SELECTION 32
2.2.2 DIFFRACTIVE PRODUCTION MECHANISMS 35
3 AMPLITUDE ANALYSIS FOR FIXED 5-BODY MASS 47
3.1 GENERAL STRUCTURE OF THE AMPLITUDE 47
3.1.1 ISOSPIN AND PARITY CONSERVATION 48
3.1.2 AMPLITUDE PARAMETRIZATION 49
3.1.3 POSITIVITY CONSTRAINTS 51
3.2 DECAY PARAMETRIZATION - THE ISOBAR MODEL 51
3.2.1 HELICITY FORMALISM 53
3.2.2 ISOBAR PARAMETRIZATIONS 57
3.2.3 ISOSPIN SYMMETRY 65
IX
HTTP://D-NB.INFO/1029093423
IMAGE 2
3.2.4 BOSE SYMMETRY 69
3.2.5 IMPLEMENTATION 69
3.3 PARTIAL WAVES EXAMPLES 70
3.4 EXTENDED LOG-LIKELIHOOD FIT FORMALISM 72
3.4.1 DERIVATION OF THE LOG-LIKELIHOOD FUNCTION 72
3.5 OBSERVABLE QUANTITIES 76
3.6 ACCEPTANCE CORRECTIONS 77
4 MODEL SELECTION 81
4.1 BAYESIAN MODEL EVALUATION 82
4.1.1 THE OCCAM-FACTOR APPROXIMATION 83
4.1.2 PRIOR PROBABILITIES 84
4.1.3 QUANTITATIVE INTERPRETATION OF EVIDENCE 87
4.2 WAVESET EVOLUTION 87
4.2.1 THE GENETIC OPTIMIZATION ALGORITHM 88
4.2.2 PERFORMANCE OF 5TT WAVESET EVOLUTION 92
4.3 MINI-CONCLUSION 94
5 RESULTS O F THE PARTIAL-WAVE DECOMPOSITION IN FIXED 5-BODY-MASS BINS
97
5.1 COMPARISON OF FIT RESULTS WITH THE DATA 98
5.1.1 DISCUSSION OF KINEMATIC DISTRIBUTIONS 100
5.1.2 CALCULATION OF BANDS OF UNCERTAINTY 108
5.2 SPIN-DENSITY MATRIX ELEMENTS 108
5.2.1 THE FLAT AMPLITUDE I L L
5.2.2 J P C = 0 _ + PARTIAL-WAVE AMPLITUDES 112
5.2.3 J P C = 1 + + PARTIAL-WAVE AMPLITUDES 114
5.2.4 J P C - 2~ + PARTIAL- WAVE AMPLITUDES 117
5.2.5 FURTHER COMPONENTS 119
5.3 THE 4?R SUBSYSTEM 120
5.3.1 A TECHNIQUE FOR THE EXTRACTION OF ISOBAR AMPLITUDES 120
5.3.2 RESULTS FOR SELECTED 47R PARTIAL WAVES 121
6 MASS DEPENDENT PARAMETRIZATION O F THE SPIN DENSITY MATRIX 125
6.1 MASS DEPENDENT FIT FORMALISM 125
6.2 RESONANCE EXTRACTION RESULTS 128
6.2.1 J P C M E = 0~ + 0 + PARTIAL WAVES 133
6.2.2 J P C M E = L + + 0 + PARTIAL WAVES 135
6.2.3 J P C M E = 2~ + 0 + PARTIAL WAVES 141
6.3 SEARCH FOR J P C = 4 _ + RESONANCES 152
6.4 CONCLUSION 155
IMAGE 3
7 SIMULATION O F A HIGH-RATE GEM-BASED TIME PROJECTION CHAMBER 157
7.1 TPC DETECTOR RESPONSE SIMULATION 159
7.2 CHARGED FRACK RECONSTRUCTION 160
7.3 CLUSTER FINDER 161
7.3.1 PATTERN RECOGNITION 165
7.3.2 GENFITTVACK FITTING PACKAGE 167
7.4 EVENT DECONVOLUTION 171
7.4.1 EVENT MIXING SIMULATION 171
7.4.2 STRATEGIES FOR EVENT DECONVOLUTION 173
7.4.3 EVENT DECONVOLUTION PERFORMANCE 174
7.5 SPACE CHARGE SIMULATION 177
A 5 N PHASE-SPACE ACCEPTANCE 181
B POOL O F PARTIAL AMPLITUDES 189
C ERROR PROPAGATION O F AMPLITUDE ANALYSIS OBSERVABLES 207
BIBLIOGRAPHY 211
|
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| author | Neubert, Sebastian |
| author_facet | Neubert, Sebastian |
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| discipline | Physik |
| format | Thesis Book |
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| indexdate | 2024-07-10T00:22:27Z |
| institution | BVB |
| language | English |
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| physical | IX, 225 S. graph. Darst. |
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| spelling | Neubert, Sebastian Verfasser aut First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS Sebastian Neubert 2012 IX, 225 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Massenresonanz (DE-588)4311657-7 gnd rswk-swf Pion (DE-588)4174718-5 gnd rswk-swf COMPASS-Detektor (DE-588)4723679-6 gnd rswk-swf Teilchenerzeugung (DE-588)4260998-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Pion (DE-588)4174718-5 s Teilchenerzeugung (DE-588)4260998-7 s Massenresonanz (DE-588)4311657-7 s COMPASS-Detektor (DE-588)4723679-6 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20120710-1108179-1-4 http://mediatum.ub.tum.de/node?id=1108179 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108179-1-4 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025214778&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Neubert, Sebastian First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS Massenresonanz (DE-588)4311657-7 gnd Pion (DE-588)4174718-5 gnd COMPASS-Detektor (DE-588)4723679-6 gnd Teilchenerzeugung (DE-588)4260998-7 gnd |
| subject_GND | (DE-588)4311657-7 (DE-588)4174718-5 (DE-588)4723679-6 (DE-588)4260998-7 (DE-588)4113937-9 |
| title | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS |
| title_auth | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS |
| title_exact_search | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS |
| title_full | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS Sebastian Neubert |
| title_fullStr | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS Sebastian Neubert |
| title_full_unstemmed | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS Sebastian Neubert |
| title_short | First amplitude analysis of resonant structures in the 5-pion continuum at COMPASS |
| title_sort | first amplitude analysis of resonant structures in the 5 pion continuum at compass |
| topic | Massenresonanz (DE-588)4311657-7 gnd Pion (DE-588)4174718-5 gnd COMPASS-Detektor (DE-588)4723679-6 gnd Teilchenerzeugung (DE-588)4260998-7 gnd |
| topic_facet | Massenresonanz Pion COMPASS-Detektor Teilchenerzeugung Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1108179 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120710-1108179-1-4 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025214778&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT neubertsebastian firstamplitudeanalysisofresonantstructuresinthe5pioncontinuumatcompass |