1998 Fiscal Year Final Research Report Summary
Supersymmetric Particle Production at LEP2 and HERA
| Project/Area Number |
08640388
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | SEIKEI UNVERSITY |
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Principal Investigator |
KON Tadashi Seikei University, Faculty of Engineering, Lecturer, 工学部, 講師 (90215442)
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| Project Period (FY) |
1996 – 1998
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| Keywords | High Energy Physics Experiment / Elementary Particles / Supersymmetry |
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| Research Abstract |
(a) An event generator for supersymmetric patricle production processes at LEP2 energy region, Susy23 v2.0, has been developed in collaboration with MINAMI-TATEYA GROUP at KEK. It was used for analyses of various production processes. In particular, we have shown that the spin correlation effects could be very important in case of production of unstable particles with non-zero spin.
(b) For the chargino production at eィイD1+ィエD1eィイD1-ィエD1 colliders we calculate the full spin and spin-spin correlation effects with using GRACE program, which is an original code for automatic calculation of Feynman amplitudes.
(c) GRACE was also used for an interesting process, associated stop Higgs production at eィイD1+ィエD1eィイD1-ィエD1 linear colliders and we have shown that this process could be useful for us to extract information of arbitrary parameters in supersymmetric models.
(d) We have proposed a possible scenario for interpreting the high QィイD12ィエD1 DIS events reported by HERA experiments. It is based on the stop and sbottom production in the framework of an R-parity breaking model.
(e) Possible bosonic decay modes of the heavy stop, sbottom, stau and tau-sneutrino have been also investigated.
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[Publications] J. Fujimoto, K. Hikasa, T. Ishikawa, M. Jimbo, T. Kaneko, K. Kato, S. Kawabata, T. Kon, M. Kuroda, Y. Kurihara, T. Munehisa, D. Perret-Gallix, Y. Shimizu and H. Tanaka: "SUSY23 V2.0 : An Event Generator for Supersymmetric Process at eィイD1+ィエD1eィイD1-ィエD1 Colliders"Computer Physics Communications. 111. 185-216 (1998)
Description
「研究成果報告書概要(欧文)」より
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