| Project/Area Number |
05044052
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Kyoto University |
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Principal Investigator |
IMAI Kenichi Kyoto University, Faculty of Science, Professor, 理学部, 教授 (70025493)
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| Co-Investigator(Kenkyū-buntansha) |
DIEBOLD Guy e. Yale University, Research Associate, Research S
CHRIEN Robert e. Brookhaven National Lab., M.E.Phys.Group Leader, AGS Dept, MEGroup Le
PILE Philip h. Brookhaven National Lab., Head of EP & D Division, AGS Dept, Physicist
YOSOI Masaru Kyoto University, Faculty of Science, Instructor, 理学部, 助手 (80183995)
E'NYO Hideto Kyoto University, Faculty of Science, Associate Professor, 理学部, 助教授 (30213606)
MASAIKE Akira Kyoto University, Faculty of Science, Professor, 理学部, 教授 (40022587)
GUY E. Diebo Yale Univ., Research S
ROBERT.E. Ch Brookhaven Natl Lab., AGS Dep't, ME Group L
PHILIP H. Pi Brookhaven Natl Lab., AGS Dep't, Physicist
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 1994: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | quark matter / strangelet / quark-gluon plasma / heavy-ion collision / strangeness / newparticle / Hdibaryon / hyper-nuclei / クォーク・グルオンプラズマ / H-ダイバリオン |
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| Research Abstract |
The purpose of this research is to search for new particles such as strange quark matter (strangelet) in relativistic heavy-ion collisions. We have searched for such particles with small Z/A values in Si+Pt and Au+Pt collisions at about 12 GeV/N at the Brookhaven National Laboratory. The experiment was performed quite successfully. No new particles, however, was observed. We have reached to the highest sensitivity of an order of nb in the production cross section. This result rules out the production of the strangelet through the formation of quark-gluon plasma at this energy. A paper on this result has been already submitted to Phys.Rev.
In the same experiment, we have also obtained the production cross sections for pi, K,p, d, t, ^3He, ^4He in Si+Pt and Au+Pt collisions, and the results were published already. That for ^6He and ^8He is under analysis.
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