At KEK PS K2 beam line, the 1.66 GeV/c ?? beam was exposed to the emulsion(Fuji ET 7-B) which has resolution(~1μm) of recording a charged particle track, K?? and Λ-hypernucleus immediately came out after the reaction ??p→??, p→ΛΛ+28 MeV. We ha...
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https://www.riss.kr/link?id=A2010194
1995
Korean
405.000
학술저널
43-51(9쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
At KEK PS K2 beam line, the 1.66 GeV/c ?? beam was exposed to the emulsion(Fuji ET 7-B) which has resolution(~1μm) of recording a charged particle track, K?? and Λ-hypernucleus immediately came out after the reaction ??p→??, p→ΛΛ+28 MeV. We ha...
At KEK PS K2 beam line, the 1.66 GeV/c ?? beam was exposed to the emulsion(Fuji ET 7-B) which has resolution(~1μm) of recording a charged particle track, K?? and Λ-hypernucleus immediately came out after the reaction ??p→??, p→ΛΛ+28 MeV. We have searched the single Λ-hypermucleus at (K??, K??) reaction vertex in the emulsion(mod #3 ~ #15) by the emulsion-counter hybrid method. Hyperfragment track(1 ~ 10μm) is observed at (K??, K??) point with 78 events for single Λ-hypernucleus and 3 events of double Λ-hypernucleus, which can be classified by HF's emission angle(B/F=1/3), azimuthal angle(isotropic) and range(1~10μm). The single Λ-hypernucleus can easily escape the nucleus in the region ?? < 1.0GeV/c. The ?? emission angle, kinetic energy, total energy and mass are obtained by supposing the two body reaction p(??,??)?? in the kinematics. Three (??, ??) data are analyzed with high mass #15-10-40 ??(2033±45 MeV/c²), #11-11-11??(1849±43 MeV/c²), #13-2-49 ??(1745±45 meV/c²).
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