抄録
A search for double-Λ hypernuclei ((ΛΛ)/12Be) and H-dibaryons using the 12C(K-, K+) reaction was performed at the BNL-AGS using a high-intensity 1.8 GeV/c K- beam. A missing-mass analysis below the end point of the quasi-free Ξ- production was used to investigate these S = -2 systems. The upper limit obtained for the forward-angle cross section of (ΛΛ)/12 Be production is 6 to 10 nb/sr. This is the first search for the direct production of double-Λ hypernuclei to reach the sensitivity required to observe the signal predicted by theoretical calculations. For the H-production cross section, we have obtained an upper limit in the range of a few nb/sr to 10 nb/sr for the H mass below 2100 MeV/c2. This upper limit is the most sensitive H search result to date for a tightly bound H. (C) 2000 Published by Elsevier Science B.V.
本文言語 | English |
---|---|
ページ(範囲) | 401-407 |
ページ数 | 7 |
ジャーナル | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
巻 | 478 |
号 | 4 |
DOI | |
出版ステータス | Published - 2000 4月 13 |
外部発表 | はい |
ASJC Scopus subject areas
- 核物理学および高エネルギー物理学