https://doi.org/10.1140/epja/i2007-10468-4
HYP 2006
The A(K- stop,Λd )A' reaction, a tool to observe [¯NNN] clusters
1
Dipartimento di Fisica, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy
2
University of Victoria, Finnerty Rd., Victoria, Canada
3
Laboratori Nazionali di Frascati dell'INFN, via E. Fermi 40, Frascati, Italy
4
Department of Physics, Seoul National University, 151-742, Seoul, Korea
5
Dipartimento di Meccanica, Università di Brescia, via Valotti 9, Brescia, Italy
6
Dipartimento di Fisica Sperimentale, Università di Torino, Italy
7
Dipartimento di Fisica, Università di Trieste, Italy
8
Dipartimento di Fisica Generale, Università di Torino, Italy
9
INFN Sezione di Torino, via P. Giuria 1, Torino, Italy
10
ENEA C.R. Frascati, via E. Fermi 45, Frascati, Italy
11
Dipartimento InterAteneo di Fisica, Università di Bari, Italy
12
INFN Sezione di Bari, via Amendola 173, Bari, Italy
13
INFN Sezione di Pavia, via Bassi 6, Pavia, Italy
14
Department of Physics, University of Tokyo, 113-0033, Bunkyo Tokyo, Japan
15
INFN Sezione di Trieste, via Valerio 2, Trieste, Italy
16
JINR Dubna, Moscow region, Russia
17
Department of Physics, Shahid Behesty University, 19834, Teheran, Iran
18
INAF-IFSI Sezione di Torino, Corso Fiume 4, Torino, Italy
19
High Energy Accelerator Research Organization (KEK), 305-0801, Tsukuba, Ibaraki, Japan
20
RIKEN, 351-0198, Wako, Saitama, Japan
* e-mail: stefano.piano@ts.infn.it
Received:
28
February
2007
Accepted:
7
July
2007
Published online:
31
August
2007
This work presents experimental results obtained from a study of the K - stop A → ΛdA' reaction, where A = 6 Li . The study concerns the distributions of the Λd invariant mass, which allows us to determine the structure of bound [K - ppn] systems in nuclei. A candidate of such clusters is identified in the present measurement, and its mass (binding energy), decay width and yield are reported. The experiment was performed at the DAΦ NE φ -facility (LNF) by using the FINUDA spectrometer. The study depended on the capability of FINUDA to reconstruct the traces of all the particles involved in the decay of the nuclear cluster.
PACS: 21.45.+v Few-body systems – / 21.80.+a Hypernuclei – / 25.80.Nv Kaon-induced reactions –
© Società Italiana di Fisica and Springer-Verlag, 2007