Data di Pubblicazione:
2012
Abstract:
Evidence for the neutron-rich hypernucleus 6LH is presented from the FINUDA experiment at DAFNE, Frascati, studying (pi_, pi-) pairs in coincidence from the K- stop + 6Li --> 6LH + pi+ production reaction followed by 6LH --> 6He + pi- weak decay. The production rate of 6LH undergoing this two-body pi- decay is determined to be (2.9+/-2.0) 10-6/K-stop. Its binding energy, evaluated jointly from production and decay, is B=(4.0+/-1.1) MeV with respect to 5H+Lambda. A systematic difference of (0:98+/-0.74) MeV between B values derived separately from decay and from production is tentatively assigned to the 6LH 0+g.s. excitation.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
neutron-rich hypernuclei
Elenco autori:
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. Piano; R. Rui; G. Simonetti; R. Wheadon; A. Zenoni; A. Gal
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