| Project/Area Number |
61540216
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
核・宇宙線・素粒子
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| Research Institution | NATIONAL LABORATORY FOR HIGH ENERGY PHYSICS(KEK) |
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Principal Investigator |
KOBAYASHI MAKOTO KEK,DEPARTMENT OF PHYSICS,PROFESSOR, 物理研究部, 教授 (90025453)
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| Co-Investigator(Kenkyū-buntansha) |
HIKASA KEN-ICHI KEK,DEPARTMENT OF PHYSICS,RESEARCH ASSOCIATE, 物理研究部, 助手 (20208739)
HAGIWARA KAORU KEK,DEPARTMENT OF PHYSICS,RESEARCH ASSOCIATE, 物理研究部, 助手 (50189461)
YUKAWA TETSUYUKI KEK,DEPARTMENT OF PHYSICS,ASSOCIATE PROFESSOR, 物理研究部, 助教授 (20110091)
SHIMIZU YOSHIMITSU KEK,DEPARTMENT OF PHYSICS,ASSOCIATE PROFESSOR, 物理研究部, 助教授 (20011744)
SUGAWARA HIROTAKA KEK,DEPARTMENT OF PHYSICS,DIRECTOR, 物理研究部, 教授 (70015767)
大川 正典 高エネルギー物理学研究所, 物理研究系, 助手 (00168874)
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| Project Period (FY) |
1986 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥500,000 (Direct Cost: ¥500,000)
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| Keywords | TRISTAN / Quark / Gauge Theory / Supersymmetry / 輻射補正 |
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| Research Abstract |
Physics experiments at TRISTAN e^+e^- collider started in 1987.Operations at the beam energy of 25.0,26.0 and 27.5 Gev have been finished by the end of 1987 and experiments at 28.0 Gev are in progress.
Under these circumstances,the present research project is organized to study theoretical aspects of TRISTAN physics.Emphasis is put on the study of the radiative corrections and the phenomenology of the supersymmetric theory.
As for the radiative corrections,calculations have been done for the processes of lepton-pair productions,photon-pair productions,top-quark-pair productions and jet-pair productions.Corrections to the process of e^+e^- -><nu><nu><gamma>,which is useful for counting a neutrino flavor number,are also estimated.
In relation to the supersymmetric theory,various possibilities of detecting evidences of the supersymmetry at TRISTAN are studied.Among them the light scalar top is investigated extensively.From this study,it is found that existing calculations of decay amplitudes contain several errors.Beside the scalar top problem,relation to pp colliders and new types of interactions predicted by the superstring theory are also investigated.
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