Measurement of lifetimes of bottom hadrons in Z decays:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
1998
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 141 S. Ill., graph. Darst. |
Internformat
MARC
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| 003 | DE-604 | ||
| 005 | 20150522 | ||
| 007 | t | ||
| 008 | 980619s1998 ad|| m||| 00||| eng d | ||
| 016 | 7 | |a 953900509 |2 DE-101 | |
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| 100 | 1 | |a Petrak, Sibylle |d 1970- |e Verfasser |0 (DE-588)120256274 |4 aut | |
| 245 | 1 | 0 | |a Measurement of lifetimes of bottom hadrons in Z decays |c von Sibylle Petrak |
| 264 | 1 | |c 1998 | |
| 300 | |a VIII, 141 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |a Berlin, Humboldt-Univ., Diss. | ||
| 650 | 0 | 7 | |a Z-Boson |0 (DE-588)4222264-3 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Lebensdauer |0 (DE-588)4034837-4 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Bottom-Teilchen |0 (DE-588)4264356-9 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Zerfall |0 (DE-588)4067675-4 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Hadron |0 (DE-588)4022771-6 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Boson |0 (DE-588)4146396-1 |2 gnd |9 rswk-swf |
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 689 | 0 | 0 | |a Z-Boson |0 (DE-588)4222264-3 |D s |
| 689 | 0 | 1 | |a Zerfall |0 (DE-588)4067675-4 |D s |
| 689 | 0 | 2 | |a Bottom-Teilchen |0 (DE-588)4264356-9 |D s |
| 689 | 0 | 3 | |a Lebensdauer |0 (DE-588)4034837-4 |D s |
| 689 | 0 | |5 DE-604 | |
| 689 | 1 | 0 | |a Hadron |0 (DE-588)4022771-6 |D s |
| 689 | 1 | 1 | |a Boson |0 (DE-588)4146396-1 |D s |
| 689 | 1 | 2 | |a Lebensdauer |0 (DE-588)4034837-4 |D s |
| 689 | 1 | |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=008130418&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-008130418 | |
Datensatz im Suchindex
| _version_ | 1812452975761686528 |
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| adam_text |
CONTENTS
1 INTRODUCTION 1
1.1 MOTIVATION. 1
1.2 THE STANDARD MODEL. 3
1.2.1 THE ELEKTROWEAK INTERACTION. 3
1.2.2 THE STRONG INTERACTION. 5
1.3 HISTORY OF THE BOTTOM QUARK DISCOVERY . 6
1.4 THE PROCESS E
+E~ - 66 AT THE Z RESONANCE. 7
1.5 BOTTOM HADRON PRODUCTION FROM Z DECAYS. 11
2 CABIBBO-KOBAYASHI-MASKAWA QUARK MIXING MATRIX 12
2.1 MATRIX ELEMENT |VD,| . 17
2.1.1 INCLUSIVE SEMILEPTONIC WIDTH T(B -
YY
XC L U) OF B HADRONS . . 17
2.1.2 EXCLUSIVE SEMILEPTONIC DECAYS. 20
2.2 MATRIX ELEMENTS |K,J,|, IV^DL AND |VJ
S| . 22
2.2.1 RARE B HADRON DECAYS. 22
2.2.2 OBSERVATION OF
B - B AND SEARCH FOR BS - BS OSCILLATIONS . 25
2.2.3 LIFETIME DIFFERENCES OF NEUTRAL B MESONS. 34
2.2.4 POSSIBLE SCENARIOS FOR VALUES OF |K(,| AND |V^|. 40
3 THE L3 DETECTOR AT LEP 44
3.1 THE LEP E
+E~ STORAGE RING. 44
3.1.1 THE LEP ACCELERATOR SYSTEM. 45
3.1.2 LUMINOSITY. 47
3.2 THE L3 DETECTOR. 48
3.2.1 THE SILICON MICROVERTEX DETECTOR. 50
3.2.2 THE TIME EXPANSION CHAMBER. 54
3.2.3 THE Z CHAMBER. 56
V
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/953900509
3.2.4 OUTER DETECTOR COMPONENTS . 56
3.2.5 TRIGGER SYSTEM . 58
3.2.6 EVENT SIMULATION. 59
4 MEASUREMENT OF THE B HADRON PRODUCTION AND DECAY LOCATION 60
4.1 HADRONIC EVENT SELECTION. 60
4.2 CHARGED PARTICLE TRAJECTORY. 62
4.3 COMMON VERTEX OF SEVERAL TRACKS . 63
4.4 TRACK RESOLUTION NEAR THE
E~ BEAM LOCATION. 64
4.4.1 IMPACT PARAMETER RESOLUTION. 64
4.4.2
ZQ RESOLUTION. 68
4.5 BEAM POSITION MEASUREMENT. 69
4.5.1 CENTRAL BEAM SPOT POSITION . 69
4.5.2 BEAM SPOT DIMENSION. 69
4.6 TRACK QUALITY SELECTION. 70
4.6.1 ANTISELECTION OF TRACKS FROM IDENTIFIED
K§ AND A DECAYS . 71
4.7 RECONSTRUCTION OF Z DECAYS INTO 66. 73
5 AVERAGE B HADRON LIFETIME 79
5.1 PRINCIPLE OF MEASUREMENT. 79
5.2 MONTE CARLO SIMULATION OF BOTTOM HADRONS. 80
5.2.1 BOTTOM QUARK FRAGMENTATION. 81
5.2.2 SIMULATION OF B HADRON DECAYS. 82
5.2.3 DETERMINATION OF MODEL PARAMETERS. 83
5.3 DECAY LENGTH METHOD. 85
5.4 IMPACT PARAMETER METHOD. 87
5.5 SYSTEMATIC UNCERTAINTIES AND CROSS CHECKS. 89
5.5.1 DETECTOR UNCERTAINTIES. 90
5.5.2 UNCERTAINTIES FROM MODELING OF HEAVY QUARKS. 90
5.5.3 CROSS CHECKS. 93
5.6 COMBINATION OF DECAY LENGTH AND IMPACT PARAMETER RESULTS. 95
6 BOTTOM HADRON IDENTIFICATION 98
6.1 CHARGE MEASUREMENT IN INCLUSIVE B DECAYS. 99
VI
7 LIFETIMES OF NEUTRAL AND CHARGED B HADRONS AND
AT OF BT MESONS 104
7.1 THE FREE PARAMETERS IN THE FIT.104
7.2 FIT RESULTS. 105
7.2.1 THREE-PARAMETER FIT.105
7.2.2 LEP CONSTRAINED FIVE-PARAMETER FIT.109
7.3 SYSTEMATIC UNCERTAINTIES.113
7.4 DISCUSSION OF THE FIT RESULTS.115
7.4.1 THE LIFETIME RATIO
T(B+)/T(B)
.115
7.4.2 THE UPPER LIMIT ON AT/T.116
8 DETERMINATION OF THE | VD, | VALUE 117
8.1 THE H4
6| VALUE.117
8.1.1 MEASUREMENT OF
TJ,.117
8.1.2 MEASUREMENT OF
B(B -* XC L U) .119
8.1.3 RESULT.122
8.2 COMPARISON WITH THE
|V^*| DETERMINATION FROM THE DECAY B -
YY
D* IP 122
9 LOWER BOUND ON THE VALUE OF
\VTD/VU\ 124
9.1 DETERMINATION OF THE VALUE OF |
VTD/VTS |.124
9.1.1 RESULT.125
9.1.2 UPPER BOUND ON THE VALUE OF AMB, .125
10 SUMMARY AND CONCLUSIONS 126
10.1 STATUS OF THE CKM MATRIX ELEMENTS.126
10.1.1 WHAT CAN WE LEARN FROM MAGNITUDES?.126
10.2 THE ISSUE OF THIS THESIS.129
10.2.1 A BRIEF LOOK INTO THE FUTURE .130
A CORRELATION OF FIT VARIABLES 133
VII |
| any_adam_object | 1 |
| author | Petrak, Sibylle 1970- |
| author_GND | (DE-588)120256274 |
| author_facet | Petrak, Sibylle 1970- |
| author_role | aut |
| author_sort | Petrak, Sibylle 1970- |
| author_variant | s p sp |
| building | Verbundindex |
| bvnumber | BV012013197 |
| classification_rvk | UO 5330 |
| ctrlnum | (OCoLC)64632821 (DE-599)BVBBV012013197 |
| discipline | Physik |
| format | Thesis Book |
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| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| id | DE-604.BV012013197 |
| illustrated | Illustrated |
| indexdate | 2024-10-09T16:04:11Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-008130418 |
| oclc_num | 64632821 |
| open_access_boolean | |
| owner | DE-355 DE-BY-UBR DE-29T DE-11 DE-188 DE-706 |
| owner_facet | DE-355 DE-BY-UBR DE-29T DE-11 DE-188 DE-706 |
| physical | VIII, 141 S. Ill., graph. Darst. |
| publishDate | 1998 |
| publishDateSearch | 1998 |
| publishDateSort | 1998 |
| record_format | marc |
| spelling | Petrak, Sibylle 1970- Verfasser (DE-588)120256274 aut Measurement of lifetimes of bottom hadrons in Z decays von Sibylle Petrak 1998 VIII, 141 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Berlin, Humboldt-Univ., Diss. Z-Boson (DE-588)4222264-3 gnd rswk-swf Lebensdauer (DE-588)4034837-4 gnd rswk-swf Bottom-Teilchen (DE-588)4264356-9 gnd rswk-swf Zerfall (DE-588)4067675-4 gnd rswk-swf Hadron (DE-588)4022771-6 gnd rswk-swf Boson (DE-588)4146396-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Z-Boson (DE-588)4222264-3 s Zerfall (DE-588)4067675-4 s Bottom-Teilchen (DE-588)4264356-9 s Lebensdauer (DE-588)4034837-4 s DE-604 Hadron (DE-588)4022771-6 s Boson (DE-588)4146396-1 s DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008130418&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Petrak, Sibylle 1970- Measurement of lifetimes of bottom hadrons in Z decays Z-Boson (DE-588)4222264-3 gnd Lebensdauer (DE-588)4034837-4 gnd Bottom-Teilchen (DE-588)4264356-9 gnd Zerfall (DE-588)4067675-4 gnd Hadron (DE-588)4022771-6 gnd Boson (DE-588)4146396-1 gnd |
| subject_GND | (DE-588)4222264-3 (DE-588)4034837-4 (DE-588)4264356-9 (DE-588)4067675-4 (DE-588)4022771-6 (DE-588)4146396-1 (DE-588)4113937-9 |
| title | Measurement of lifetimes of bottom hadrons in Z decays |
| title_auth | Measurement of lifetimes of bottom hadrons in Z decays |
| title_exact_search | Measurement of lifetimes of bottom hadrons in Z decays |
| title_full | Measurement of lifetimes of bottom hadrons in Z decays von Sibylle Petrak |
| title_fullStr | Measurement of lifetimes of bottom hadrons in Z decays von Sibylle Petrak |
| title_full_unstemmed | Measurement of lifetimes of bottom hadrons in Z decays von Sibylle Petrak |
| title_short | Measurement of lifetimes of bottom hadrons in Z decays |
| title_sort | measurement of lifetimes of bottom hadrons in z decays |
| topic | Z-Boson (DE-588)4222264-3 gnd Lebensdauer (DE-588)4034837-4 gnd Bottom-Teilchen (DE-588)4264356-9 gnd Zerfall (DE-588)4067675-4 gnd Hadron (DE-588)4022771-6 gnd Boson (DE-588)4146396-1 gnd |
| topic_facet | Z-Boson Lebensdauer Bottom-Teilchen Zerfall Hadron Boson Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008130418&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT petraksibylle measurementoflifetimesofbottomhadronsinzdecays |