1993 Fiscal Year Final Research Report Summary
Phenomenological Study of Gauge Theory
| Project/Area Number |
03302015
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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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 | The University of Tokyo |
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Principal Investigator |
IGI Kenji The Univ of Tokyo, Faculty of Science, Professor (20011497)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Ken Yokohama National Univ., Faculty of Education, Associate Professor (00114976)
KURIMOTO Takeshi Osaka Univ., College of General Education, Research Associate (10195563)
HIOKI Yoshio Tokushima, Univ., Faculty of Integrated Arts and Sciences, Associate Professor (90173129)
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| Project Period (FY) |
1991 – 1993
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| Keywords | Weirberg Salap Th / Higgs / WW Scatteing / Heary quark th / Current algebla / U osullahon / Super symmetry / Hadrons |
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| Research Abstract |
(1)Origin of electro weak symmetry breaking
If Higgs boson is very heavy, weak interaction beckomes strong and we cannot rely on pertubation. Igi and Hikasa analyzed the scattering amplitude of WW scatterring by using the equivalence theorem. analiticity and N/D method and discussed pssibility to detect the strong interaction in e^+e^-collider. Yonezawa studied higher order corrections of electro-weak interactions.
(2)Phvsics of Hadrons
Hioki studied non-leptonic decay of B mesons and semi-leptonic decay of Lambda particles by using the heave quark effective theory. Kurimoto calculated this effective Lagrangian yp to 1/M corrections. Terasaki studied weak decay of K,B mesons by incorpolating various harons in intermeiate states. Kooshita analyzed cascade model of hadrons with diffract
(3)Nutorino
Hikasi showed that a possibility of heavy nutorino as dark matter in halos can be excluded. Kurimoto studied the effect of inhomogeneity of magnetic field in sun on nutorino oscillation. Suematu discussed the atmospheric nutorono and solar nuturino problem in susy GUT.
(4)Others
Sasaki analyzed op condensation mechanism in SUSY theory and predicted mass of top quark from 150 to 190 Gev. Yamawaki studied quantum effect of effective theory based on hidden local symmetry. Watanabe studied fundamental research on low temperature detecter for dark matter, monopole and solar nutorino.
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