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Report No.

Experimental study of double hypernuclei at J-PARC

Yoshida, Junya

Double $$Lambda$$ hypernuclei and $$Xi$$ hypernuclei, collectively called "double hypernuclei", have come to play important roles in hadron nuclear physics as valuable information sources of baryon-baryon interaction. The most effective method to investigate them is event-by-event analysis with photographic emulsion sheets. An emulsion experiment to detect double hypernuclei has been performed in the J-PARC hadron facility in 2016-17. By this experiment, quantitative data on $$LambdaLambda$$ or $$Xi N$$ interaction in a nucleus are being accumulated successfully. A new nuclide of double hypernucleus, $$_{LambdaLambda}$$Be, was observed. Several other interesting events have been found and further event search is going on.



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