https://doi.org/10.1051/epjconf/20146609003
Neutron-rich Λ-Hypernuclei study with the FINUDA experiment
1 INFN Sezione di Torino, via P. Giuria 1, Torino, Italy
2 Dipartimento di Fisica, Università di Torino, via P. Giuria 1, Torino, Italy
a e-mail: botta@to.infn.it
Published online: 20 March 2014
The FINUDA experiment at DAΦNE, Frascati, has found evidence for the neutron-rich hypernucleus 
studying (π+, π−) pairs in coincidence from the 
production reaction followed by 
weak decay. The production rate of 
undergoing this two-body π− decay has been found to be 
. Its binding energy has been evaluated to be 
MeV with respect to 
, jointly from production and decay. A systematic difference of (0.98 ± 0.74) MeV between BΛ values derived separately from decay and from production has been tentatively assigned to the 
excitation. A similar investigation has been carried out for the neutron-rich hypernucleus 
studying the 
reaction in coincidence with the 
weak decay; an upper limit for the production rate of 
undergoing the two-body π− decay has been found to be 
(90% C.L.).
© Owned by the authors, published by EDP Sciences, 2013
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