Direct experimental evidence of the weak Λ n p → n n p hypernucleus decay

M. Agnello, L. Benussi, M. Bertani,H. C. Bhang, G. Bonomi,E. Botta, M. Bregant,T. Bressani,S. Bufalino, L. Busso,D. Calvo,P. Camerini,B. Dalena,F. De Mori,G. D'Erasmo,F. L. Fabbri, A. Feliciello, A. Filippi,E. M. Fiore,A. Fontana, H. Fujioka,P. Genova, P. Gianotti,N. Grion,V. Lucherini,S. Marcello,N. Mirfakhrai,F. Moia,O. Morra, T. Nagae,H. Outa, A. Pantaleo,V. Paticchio, S. Paino,R. Rui, G. Simonetti, R. Wheadon, A. Zenoni

msra（2011）

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摘要

A direct experimental evidence of the occurrence of the weak reaction Λ np→ nnp in nuclei has been obtained by the FINUDA experiment. Three events have been found that can be attributed to ^7_ΛLi and ^9_ΛBe two nucleon-induced non mesonic weak decays. The kinematic analysis of such events is presented here.

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high energy physics

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