Experimental study of QCD at TRISTAN : determination of the QCD scale parameter トリスタンにおける量子色力学の実験的研究 : QCDスケール・パラメータの決定
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著者
書誌事項
- タイトル
-
Experimental study of QCD at TRISTAN : determination of the QCD scale parameter
- タイトル別名
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トリスタンにおける量子色力学の実験的研究 : QCDスケール・パラメータの決定
- 著者名
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渡部, 隆史
- 著者別名
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ワタナベ, タカシ
- 学位授与大学
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東京都立大学
- 取得学位
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理学博士
- 学位授与番号
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甲第258号
- 学位授与年月日
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1991-03-25
注記・抄録
博士論文
We carried out the first analysis in TRISTAN experiments by means of a new Monte Carlo program of the QCD cascade in which the next-to-leading logarithmic approximation is incorporated. This program can uniquely determine the QCD scale parameter ∧</MS>=254^<+55>_<-47>±56 MeV using data of multihadron productions in e^+e_- annihilation √s=54～61.4 GeV. It is confirmed that the strong coupling strength is running in the energy range between PETRA/PEP, TRISTAN and LEP/SLC experiments. We also found that this simulation program with two types of hadronization models, i.e. the modified independent jet model and string model reproduces various distributions pretty well over wide energy range.
東京都立大学, 1991-03-25, 理学博士, 甲第258号
目次
- CONTENTS / p6 (0008.jp2)
- Abstract / p2 (0004.jp2)
- Acknowledgements / p3 (0005.jp2)
- VENUS collaboration / p4 (0006.jp2)
- Chapterl Introduction / p1 (0011.jp2)
- Chapter2 Perturbative QCD / p4 (0014.jp2)
- 2-1 Short History of QCD / p4 (0014.jp2)
- 2-2 Conventional Perturbative Expansion / p6 (0016.jp2)
- 2-3 QCD Cascade(I):Leading Order / p11 (0021.jp2)
- 2-4 QCD Cascade(II):Next-to-Leading Order / p15 (0025.jp2)
- Chapter3 Experimental Apparatus / p17 (0027.jp2)
- 3-1 TRISTAN / p17 (0027.jp2)
- 3-2 VENUS Detector / p20 (0030.jp2)
- Chapter4 Data Reduction / p31 (0041.jp2)
- 4-1 Concept of Data Reduction / p31 (0041.jp2)
- 4-2 Preselection(Process I) / p32 (0042.jp2)
- 4-3 Multihadron Selection / p33 (0043.jp2)
- Chapter5 Measurement of Total Cross Section / p49 (0059.jp2)
- 5-1 Theoretical Calculation / p49 (0059.jp2)
- 5-2 Luminosity Measurement / p52 (0062.jp2)
- 5-3 Acceptance of VENUS Detector / p52 (0062.jp2)
- 5-4 Background Contamination / p54 (0064.jp2)
- 5-5 Experimental Measurement of R Value / p57 (0067.jp2)
- 5-6 Determination of the QCD Scale Parameter / p59 (0069.jp2)
- Chapter6 Multihadronic Event Shape Analysis / p63 (0073.jp2)
- 6-1 Motivation / p63 (0073.jp2)
- 6-2 Introduction of Multihadronic Event Generators / p64 (0074.jp2)
- 6-3 Independent Jet Model / p65 (0075.jp2)
- 6-4 String Model / p67 (0077.jp2)
- 6-5 Transverse Momentum / p68 (0078.jp2)
- 6-6 Event Shape Analysis / p70 (0080.jp2)
- 6-7 Comparison of Model Calculations with Experimental Data / p72 (0082.jp2)
- Chapter7 Jet Cross Section / p94 (0104.jp2)
- 7-1 Motivation of Jet Clustering / p94 (0104.jp2)
- 7-2 Jet Clustering / p95 (0105.jp2)
- 7-3 Determination of the QCD Scale Parameter / p96 (0106.jp2)
- 7-4 Effects of the Hadronization on R₃ / p98 (0108.jp2)
- 7-5 Energy Dependence of α₃ / p98 (0108.jp2)
- Chapter8 Conclusion / p101 (0111.jp2)
- Appendix A Detector Simulation Program / p103 (0113.jp2)
- A-1 Program“VMONT" / p103 (0113.jp2)
- A-2 Program“VITMIN" / p104 (0114.jp2)
- References / p112 (0122.jp2)
- List of Figures / p117 (0127.jp2)
- List of Tables / p120 (0130.jp2)