Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2000
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Berlin, Humboldt-Univ., Diss., 2000 (Nicht für den Austausch) |
| Beschreibung: | 144 S. Ill., graph. Darst. : 30 cm |
Internformat
MARC
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| 100 | 1 | |a Ziegler, Frank |d 1967- |e Verfasser |0 (DE-588)122239547 |4 aut | |
| 245 | 1 | 0 | |a Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP |c von Frank Ziegler |
| 264 | 1 | |c 2000 | |
| 300 | |a 144 S. |b Ill., graph. Darst. : 30 cm | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 500 | |a Berlin, Humboldt-Univ., Diss., 2000 (Nicht für den Austausch) | ||
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| 650 | 0 | 7 | |a Tauon |0 (DE-588)4233855-4 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Leptonischer Zerfall |0 (DE-588)4275323-5 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a L3-Detektor |0 (DE-588)4352014-5 |2 gnd |9 rswk-swf |
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| 689 | 0 | 2 | |a Verzweigungsverhältnis |0 (DE-588)4311722-3 |D s |
| 689 | 0 | 3 | |a L3-Detektor |0 (DE-588)4352014-5 |D s |
| 689 | 0 | |5 DE-604 | |
| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009195368&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
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Datensatz im Suchindex
| _version_ | 1812460957402660864 |
|---|---|
| adam_text |
CONTENTS
\
INTRODUCTION. 1
PART I THEORETICAL FRAMEWORK AND EXPERIMENTAL CONDITIONS 3
1.
THE TAU LEPTON IN THE STANDARD MODEL. 5
1.1 THE STANDARD MODEL OF PARTICLE PHYSICS . 5
1.2 THE ELECTROWEAK STANDARD MODEL. 7
1.3 THE TAU AS STANDARD MODEL LABORATORY . 11
1.4 TAU PAIR PRODUCTION. 14
1.5 TAU LEPTONIC DECAY . 16
1.6 PHYSICS INTEREST IN TAU LEPTONIC BRANCHING FRACTIONS. 19
2. THE L3 EXPERIMENT AT LEP
. 25
2.1 THE LARGE ELECTRON POSITRON COLLIDER. 25
2.2 THE L3 DETECTOR . 27
2.2.1 THE CENTRAL TRACKING SYSTEM. 29
2.2.2 THE ELECTROMAGNETIC CALORIMETER. 32
2.2.3 THE SCINTILLATION COUNTERS . . .*. 34
2.2.4 THE HADRON CALORIMETER. 34
2.2.5 THE MUON SPECTROMETER. 35
2.2.6 THE LUMINOSITY MONITOR. 37
2.2.7 THE L3 TRIGGER SYSTEM. 37
3. PHYSICS CAPABILITIES IN L3
41
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/959662693
3.1 EVENT RECONSTRUCTION. 41
3.2 PARTICLE IDENTIFICATION. 43
3.3 DETECTOR SIMULATION. 44
PART II MEASUREMENT OF TAU LEPTONIC BRANCHING FRACTIONS 47
4. METHOD OF MEASUREMENT. 49
4.1 TAU LEPTONIC BRANCHING FRACTION MEASUREMENT AT LEP. 49
4.2 SINGLE HEMISPHERE TAGGING . 52
5. SELECTION OF THE TAU SAMPLE. 55
5.1 DILEPTON PRESELECTION . 56
5.2 SELECTION OF THE TAU SAMPLE. 56
5.2.1 PRINCIPLES OF THE TAU SELECTION. 56
5.2.2 IDENTIFICATION OF TAU PAIR EVENTS . 60
5.2.3 COSMIC MUON BACKGROUND. 62
5.2.4 BACKGROUND FROM E
+E_ - E+E- . 63
5.2.5 BACKGROUND FROM E
+E_
-
65
5.2.6 BACKGROUND FROM TWO-PHOTON INTERACTIONS. 68
5.2.7 BACKGROUND FROM E
+E~ - QQ . 71
5.3 SUMMARY FOR THE TAU SELECTION. 71
6. IDENTIFICATION OF LEPTONIC TAU DECAYS. 75
6.1 LEPTON IDENTIFICATION. 75
6.1.1 ELECTRON IDENTIFICATION. 75
6.1.2 MUON IDENTIFICATION. 80
6.2 IDENTIFICATION OF LEPTONIC TAU DECAYS. 83
6.2.1 IDENTIFICATION OF R
-YY
EI U
.
83
6.2.2 IDENTIFICATION OF
T
- FXVU
. 87
7. THE MEASUREMENT. 89
7.1 BACKGROUND MEASUREMENTS. 89
7.1.1 BACKGROUND MEASUREMENTS FOR THE TAU SAMPLE. 89
7.1.2 BACKGROUND MEASUREMENTS FOR THE LEPTONIC SAMPLES
. 93
7.2 IDENTIFICATION EFFICIENCIES.\ . . . 93
7.2.1 ELECTRON IDENTIFICATION EFFICIENCY . 93
7.2.2 MUON IDENTIFICATION EFFICIENCY. 98
V
7.3 SYSTEMATIC STUDIES.105
7.3.1 SYSTEMATICS FOR THE BACKGROUND MEASUREMENTS.105
7.3.2 IDENTIFICATION OF LEPTONIC TAU DECAYS.108
7.3.3 TRIGGER EFFICIENCY.108
7.3.4 BIAS DUE TO TAU SELECTION.109
7.3.5 HADRON MISIDENTIFICATION.109
\
7.3.6 SYSTEMATICS FROM POLARISATION.110
7.3.7 MOMENTUM RANGE RESTRICTION.110
7.4 SUMMARY FOR DATA ANALYSIS.110
7.4.1 TAU SELECTION.ILL
7.4.2 IDENTIFICATION OF LEPTONIC TAU DECAYS.ILL
7.4.3 SYSTEMATIC UNCERTAINTIES.112
8. RESULTS.119
8.1 RESULTS.119
8.2 TEST OF LEPTON UNIVERSALITY .120
8.3 MEASUREMENT OF O
S.126
8.4 MASS OF THE TAU NEUTRINO .127
8.5 MASS OF A CHARGED HIGGS BOSON .127
8.6 COMPARISON WITH OTHER EXPERIMENTS *.129
9. SUMMARY AND CONCLUSION.131 |
| any_adam_object | 1 |
| author | Ziegler, Frank 1967- |
| author_GND | (DE-588)122239547 |
| author_facet | Ziegler, Frank 1967- |
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| building | Verbundindex |
| bvnumber | BV013472194 |
| classification_rvk | UO 5160 |
| ctrlnum | (OCoLC)634854509 (DE-599)BVBBV013472194 |
| discipline | Physik |
| format | Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV013472194 |
| illustrated | Illustrated |
| indexdate | 2024-10-09T18:11:02Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-009195368 |
| oclc_num | 634854509 |
| open_access_boolean | |
| owner | DE-29T |
| owner_facet | DE-29T |
| physical | 144 S. Ill., graph. Darst. : 30 cm |
| publishDate | 2000 |
| publishDateSearch | 2000 |
| publishDateSort | 2000 |
| record_format | marc |
| spelling | Ziegler, Frank 1967- Verfasser (DE-588)122239547 aut Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP von Frank Ziegler 2000 144 S. Ill., graph. Darst. : 30 cm txt rdacontent n rdamedia nc rdacarrier Berlin, Humboldt-Univ., Diss., 2000 (Nicht für den Austausch) Verzweigungsverhältnis (DE-588)4311722-3 gnd rswk-swf Tauon (DE-588)4233855-4 gnd rswk-swf Leptonischer Zerfall (DE-588)4275323-5 gnd rswk-swf L3-Detektor (DE-588)4352014-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Tauon (DE-588)4233855-4 s Leptonischer Zerfall (DE-588)4275323-5 s Verzweigungsverhältnis (DE-588)4311722-3 s L3-Detektor (DE-588)4352014-5 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009195368&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Ziegler, Frank 1967- Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP Verzweigungsverhältnis (DE-588)4311722-3 gnd Tauon (DE-588)4233855-4 gnd Leptonischer Zerfall (DE-588)4275323-5 gnd L3-Detektor (DE-588)4352014-5 gnd |
| subject_GND | (DE-588)4311722-3 (DE-588)4233855-4 (DE-588)4275323-5 (DE-588)4352014-5 (DE-588)4113937-9 |
| title | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP |
| title_auth | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP |
| title_exact_search | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP |
| title_full | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP von Frank Ziegler |
| title_fullStr | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP von Frank Ziegler |
| title_full_unstemmed | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP von Frank Ziegler |
| title_short | Measurement of the branching fractions of the Tau into leptons with the L3 detector at LEP |
| title_sort | measurement of the branching fractions of the tau into leptons with the l3 detector at lep |
| topic | Verzweigungsverhältnis (DE-588)4311722-3 gnd Tauon (DE-588)4233855-4 gnd Leptonischer Zerfall (DE-588)4275323-5 gnd L3-Detektor (DE-588)4352014-5 gnd |
| topic_facet | Verzweigungsverhältnis Tauon Leptonischer Zerfall L3-Detektor Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009195368&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT zieglerfrank measurementofthebranchingfractionsofthetauintoleptonswiththel3detectoratlep |