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DANYSZ 1963

Danysz, M. et al.
Observation of a Double Hyperfragment
Phys. Rev. Lett. 11 (1963) 29;

Abstracts
This event was discovered through a study of the interactions of 1.5 GeV/c K^–-mesons in emulsions. The interpretation given to the subsequent events is as follows: A Ξ^– emitted following the interaction of a K^– meson produces a star one track which is a double hyperfragment which subsequently decays into a π^–, a singly charged particle and an ordinary hyperfragment. This latter hyperfragment subsequently decays into a π^– and three other charged particles. From a study of the angle of emission and ranges of all the charged particles involved in these processes it is concluded that the only reasonable interpretation of the event is as suggested. (Science Abstracts. 1963, 22276. G. I. Crawford.).

Accelerator CERN-PS Detectors EMUL

Related references
See also
G. Amato et al., Nucl. Instr. and Meth. 20 (1963) 47;
S. Iwao, Nuovo Cim. 26 (1962) 1;
R. H. Dalitz and B. W. Downs, Phys. Rev. 111 (1958) 967;
Analyse data from
E. R. Fletcher et al., Phys. Lett. 3 (1963) 280;

Data comments
¹⁰Be_SS - double hyperfragment _ΛΛBe¹⁰.

Reactions

	K– nucleus Ξ– X	1.3-1.5 GeV (Plab)	cs
	Ξ– nucleus nucleus 10BeSS	0. GeV (Plab)	cs
	Ξ– nucleus nucleus 11BeSS	0. GeV (Plab)	cs

Particles studied

	hypernucleus	ex, mass
	10BeSS	ex, mass
	11BeSS	ex, mass

Record comments
First evidence for a double hypernucleus.

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