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.

Evidence for Heavy Hyperhydrogen 6LH

BOTTA, Elena;BRESSANI, Tullio;BUSSO, Luigi;DE MORI, FRANCESCA;MARCELLO, Simonetta;
2012-01-01

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.
2012
108
042501
-
neutron-rich hypernuclei
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...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/98783
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