Abstract
A systematic study of 260 000 stars produced by 4.3 GeV/
c
negative
π
-mesons and of 1000
K
-
interaction stars, both in Ilford G 5 nuclear emulsion, yielded 46 hypernuclei decaying by the mesonic mode. The identification of these events is described and the binding energy of the Λ
0
hyperon in the nucleus is calculated in each case with the help of a program written for the Ferranti Mercury computer. The binding energies of the uniquely identified hypernuclei are found to be as follows: 4 cases of
Λ
H ;
B
Λ
= 0.67 ± 0.38 MeV, 9 cases of
4
Λ
H ;
B
Λ
= 1.94 ± 0.28 MeV, 14 cases of
5
Λ
H ;
B
Λ
= 3.21 ± 0.14 MeV, 1 case of
9
Λ
Li ;
B
Λ
= 3.51 ± 3.49 MeV. All other events admit alternative interpretations, and the binding energies are tabulated for the various possibilities. Other experimental results are also discussed. The quoted errors in the binding energies are random errors; contributions from systematic sources are discussed and they amount to about 0.3 MeV.
Cited by
9 articles.
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