Search for the neutron-rich hypernucleus _{Λ}^{9}He
- M. Agnello
- L. Benussi
- M. Bertani
- H. 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. Fabbri
- A. Feliciello
- A. Filippi
- E. 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. Piano
- R. Rui
- G. Simonetti
- R. Wheadon
- A. Zenoni
- A. Gal
DOIAbstract
Search for the neutron-rich hypernucleus Λ9He is reported by the FINUDA experiment at DAΦNE, INFN-LNF, studying (π+,π−) pairs in coincidence from the Kstop−+9Be→Λ9He+π+ production reaction followed by Λ9He→9Li+π− weak decay. An upper limit of the production rate of Λ9He undergoing this two-body π− decay is determined to be (2.3±1.9)×10−6/Kstop− at the 90% confidence level
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