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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.