Journal
NUCLEAR PHYSICS A
Volume 914, Issue -, Pages 184-188Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2013.04.007
Keywords
Lambda hypernuclei; gamma-Ray spectroscopy; Lambda N interaction; Hyperball
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Funding
- Grants-in-Aid for Scientific Research [24105003, 24740138, 23244043, 24105001] Funding Source: KAKEN
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A gamma-ray spectroscopy experiment via the C-12(pi(+), K+) reaction was carried out at KEK-PS in 2005. The K6 beam line and Superconducting Kaon Spectrometer (SKS) were employed to obtain a missing mass spectrum for C-12(Lambda). An upgraded germanium detector array, Hyperba112, was introduced to detect gamma rays emitted from hypernuclei in coincidence with the (pi(+), K+) reaction. As a result of further analysis, a gamma-ray peak at 6048 keV (preliminary) was newly observed and assigned as the M1 transition from the 6-MeV excited state to the ground state. (C) 2013 Elsevier B.V. All rights reserved.
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