SEARCH FOR (SIGMA-N) AND (SIGMA-NN) BOUND STATES

被引:7
作者
BURNSTEIN, RA
CUMMINGS, WC
SWANSON, DL
VEIRS, VR
机构
来源
PHYSICAL REVIEW | 1969年 / 177卷 / 5P1期
关键词
D O I
10.1103/PhysRev.177.1945
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In an experiment involving K- capture in helium, a search was made for (Î<>-n) and (Î<>-nn) bound states as produced by the following reactions: K-+He4→(Î<>-n)+π++d; K-+He4→(Î<>-nn)+π++p. We did not find any unambiguous examples of these reactions among the interactions of 8370 stopping K- mesons. Upper limits on the rates for the production of these bound hyperon states are determined, relative to various K- capture reactions. With respect to stopping K- mesons, an upper limit on the bound-state production rate is ≤0.02%, using one ambiguous bound-state event for calculational purposes. In addition, for these data, we do not find evidence for a maximally strong (Î<>-n) final-state interaction. © 1969 The American Physical Society.
引用
收藏
页码:1945 / +
页数:1
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